Integral ecology is the notion that structures Pope Francis's encyclical Laudato si' (2015). It designates neither a green policy nor a militant cause, but a framework of thought: the conviction that questions of the environment, the economy, society, culture and human life cannot be treated separately, because they form a single fabric. Its briefest formula, repeated from one end of the encyclical to the other, holds in three words: "everything is connected".
From this intuition follows the central thesis of chapter IV of Laudato si': "There are not two separate crises, one environmental and the other social, but rather one complex crisis which is both social and environmental"[1]. One cannot therefore defend nature while despising man, nor serve man while ravaging nature. Ecology becomes integral when it listens at the same time to "both the cry of the earth and the cry of the poor"[2].
This notion is not a novelty without roots. It continues the integral human development announced by Paul VI in 1967 — a development that must promote "every man and the whole man"[3] — and the human ecology formulated by John Paul II and then Benedict XVI. Pope Francis's distinctive contribution is to integrate these threads into one, and to make them a lens for reading our "common home".
This article expounds the framework itself: what "everything is connected" means, the five dimensions of integral ecology, its magisterial genealogy, its centre — the common good and justice between generations —, the diagnosis of the "technocratic paradigm", and the decisive dividing line that separates Catholic ecology from an ecologism that would sacrifice the human person. For the biblical duty of caring for creation, see Safeguarding Creation; for the cultural objections, What to Think of Ecology?; for the teaching in summary, What Does the Church Say About Ecology?.
What is integral ecology?
The word ecology comes from the Greek oikos, the home. An integral ecology is, literally, a science of the home taken in its entirety: not only the walls (physical nature), but those who dwell in it, their relationships, their work, their culture and their future. The adjective integral means complete, leaving out no dimension. That is precisely what Pope Francis reproaches in an ecology reduced to defending natural environments alone: it is partial, and therefore false.
Why say that "everything is connected"?
The expression "everything is connected" runs like a refrain through Laudato si'[4]. It is not a poetic slogan: it is a thesis about the structure of reality. The world is not a juxtaposition of separate objects that could be managed in silos — the climate on one side, poverty on the other, the family or bioethics elsewhere. These realities communicate. An economic decision has ecological effects; environmental degradation strikes the poor first; a culture that despises nascent life ends up despising nature too.
"Everything is connected. If the human being declares himself autonomous from reality and sets himself up as absolute master, the very basis of his existence collapses." — Pope Francis, Laudato si', § 117[5]
Pope Francis draws a methodological consequence from this: a particular crisis can only be understood by linking it to the others. "We need an integrated approach to combating poverty, restoring dignity to the excluded, and at the same time protecting nature"[6]. Integral ecology is therefore first of all a way of looking: refusing to cut reality into watertight problems.
A single social and environmental crisis
The clearest consequence is the refusal to separate the social question from the environmental question. This is the heart of chapter IV:
"There are not two separate crises, one environmental and the other social, but rather one complex crisis which is both social and environmental. Strategies for a solution demand an integrated approach to combating poverty, restoring dignity to the excluded, and at the same time protecting nature." — Pope Francis, Laudato si', § 139[7]
This sentence governs everything else. It forbids two symmetrical errors: the ecologism that protects forests while forgetting men, and the developmentalism that wants to lift the poor out of misery while ravaging their environment. The criterion of a true ecology is not only the health of ecosystems, but the real fate of the persons who depend on them.
The cry of the earth and the cry of the poor
The most memorable formula of this unity is that of the double cry. Integral ecology listens simultaneously to two complaints that are but one:
"A true ecological approach always becomes a social approach; it must integrate questions of justice in debates on the environment, so as to hear both the cry of the earth and the cry of the poor." — Pope Francis, Laudato si', § 49[8]
This is what radically distinguishes Catholic ecology from certain secularized ecologies: for the Church, the poor are at the centre, not at the margin, of ecological concern. They are the ones who inhabit polluted lands, who suffer droughts, who are displaced by disasters. An ecology that forgets them is not integral.
Neither a green slogan nor a political ideology
The Church does not propose a partisan programme. Integral ecology is neither allegiance to a party, nor a fashion, nor a replacement religion in which nature would take God's place. It is a moral truth about man's place in creation, which can shed light on public debates without dissolving into them. Pope Francis explicitly refuses to reduce his message to an ideological cause: he roots it in faith in a Creator God and in the dignity of each person[9]. This precision is decisive, lest integral ecology be confused with the ecologisms that contradict it on life, the family or anthropology.
Where does integral ecology come from? A magisterial genealogy
Integral ecology did not fall from the sky in 2015. It is the culmination of half a century of magisterial reflection, which gradually linked development, the person and the environment. Understanding this genealogy prevents mistaking it for a rupture: it is an organic development of social doctrine.
- 26 March 1967Populorum Progressio (Paul VI)
Paul VI affirms that authentic development must be "integral": promoting "every man and the whole man", not merely economic growth. The first root of integral ecology.
- 1 May 1991Centesimus Annus 38 (John Paul II)
John Paul II formulates the notion of "human ecology": respecting nature and respecting the moral structure of man are inseparable.
- 29 June 2009Caritas in Veritate 48-51 (Benedict XVI)
Benedict XVI declares that "the book of nature is one and indivisible" and links the environment, life, the family and integral human development.
- 24 May 2015Laudato si' (Francis)
Francis devotes chapter IV to "integral ecology" and makes "everything is connected" the key for reading the whole of ecological social doctrine.
- 1 January 2017Dicastery for Integral Human Development
Entry into force of the new Roman dicastery bringing justice, peace, health, migrants and ecology together under the concept of integral human development.
- 2 February 2020Querida Amazonia (Francis)
The exhortation deploys integral ecology in "four dreams": social, cultural, ecological and ecclesial.
- 4 October 2023Laudate Deum (Francis)
Francis extends Laudato si' in the face of the climate emergency and reaffirms the unity of the socio-environmental crisis.
Integral human development: the root from Paul VI
The first root lies in Paul VI's encyclical Populorum Progressio (1967). Long before anyone spoke of ecology, the Pope warned that development cannot be reduced to economic growth: it must touch the whole man.
"Development cannot be limited to mere economic growth. In order to be authentic, it must be complete: integral, that is, it has to promote the good of every man and of the whole man." — Saint Paul VI, Populorum Progressio, § 14[10]
This formula — "every man and the whole man" — is the matrix of integral ecology. The word integral already designates there the refusal to slice the person into pieces: economic, biological, spiritual. It then sufficed to extend this demand to our common home to obtain the integral ecology of Laudato si'. That is why Pope Francis placed the whole social action of the Holy See in 2017 under the title of integral human development[11].
The human ecology of John Paul II and Benedict XVI
The second thread is human ecology, already treated in detail in the article Safeguarding Creation. John Paul II, in Centesimus Annus (1991), affirms that one cannot respect nature while despising the "natural and moral structure" of man[12]. Benedict XVI radicalizes the link in Caritas in Veritate (2009):
"The book of nature is one and indivisible: it takes in not only the environment but also life, sexuality, marriage, the family, social relations: in a word, integral human development." — Benedict XVI, Caritas in Veritate, § 51[13]
This sentence already contains, in germ, integral ecology: the same moral coherence holds for the environment and for human life. One cannot be "green" about forests and indifferent about the embryo, for it is the same book being read. Pope Francis directly inherits this intuition and gives it its proper name.
The five dimensions of integral ecology
Chapter IV of Laudato si' unfolds integral ecology in five dimensions that fit into one another: environmental, economic and social, cultural, of daily life, and human. Far from a decorative list, these dimensions show concretely how "everything is connected": each opens onto the next, until reaching the person and his body.
Environmental, economic and social ecology
The first two dimensions link the environment to the economy and society. Pope Francis refuses to treat ecology as an isolated sector: "Nature cannot be regarded as something separate from ourselves or as a mere setting in which we live"[14]. The economy itself must be rethought: growth that destroys its own natural support is not progress. And since institutions are part of this ecosystem, their health counts too:
"If everything is related, then the health of a society's institutions affects the environment and the quality of human life... Every violation of solidarity and civic friendship harms the environment." — Pope Francis, Laudato si', § 142[15]
Integral ecology thus includes an ecology of institutions: corruption, injustice and the rupture of the social bond are themselves forms of pollution. It is a strong and often forgotten idea: the moral quality of a society conditions the quality of its environment.
Cultural ecology
The third dimension is cultural. A human heritage — a language, skills, a memory, the way of life of an indigenous people — also belongs to the ecosystem. Destroying it in the name of uniform development is a form of ecological destruction. "There is a need to protect... local cultures," writes the Pope, rather than imposing a single model that levels human diversity[16]. Integral ecology thus defends threatened cultures in the same way as threatened species: because man too is situated in an environment he cannot lose without harm.
The ecology of daily life
The fourth dimension descends to the most concrete level: the environment in which one lives each day. Decent housing, a liveable neighbourhood, humane transport, spaces for encounter — all this belongs to integral ecology. Pope Francis insists on the fate of the poorest in overcrowded cities, where the lack of space and beauty weighs on the interior life of persons[17]. But he refuses miserabilism: even in precariousness, "love always proves more powerful," and warm human bonds can make a degraded environment habitable[18]. Integral ecology is therefore not reserved for preserved landscapes: it begins in the apartment block, the street and the family.
Human ecology: the body received as a gift
The fifth dimension is the deepest, and it is what marks Catholic specificity. Integral ecology includes respect for human nature itself, beginning with the body. Here Pope Francis draws the most demanding consequence of "everything is connected":
"The acceptance of our bodies as God's gift is vital for welcoming and accepting the entire world as a gift from the Father and our common home, whereas thinking that we enjoy absolute power over our own bodies turns, often subtly, into thinking that we enjoy absolute power over creation." — Pope Francis, Laudato si', § 155[19]
The sentence is decisive. It links the ecology of the body and the ecology of the planet: whoever claims absolute disposal over his own body — reshaping it at will, denying the sexual difference inscribed in nature — adopts at bottom the same attitude of omnipotence as whoever exploits the earth without measure. Refusing to receive one's body as a gift means settling into the technocratic logic of domination. Human ecology is thus the truth-test of all ecology: one truly respects nature only if one first respects one's own.
The common good, heart of integral ecology
If integral ecology has a centre, it is the common good. Pope Francis says so without detour: integral ecology "is inseparable from the notion of the common good"[20]. Everything else — nature, the economy, culture, daily life — is ordered to this principle: what enables each one, persons and communities, to attain his own perfection.
"Integral ecology is inseparable from the notion of the common good, a central and unifying principle of social ethics." — Pope Francis, Laudato si', § 156[21]
The common good, the encyclical recalls, presupposes respect for the person and his rights, social well-being and the development of intermediate groups[22]. The environment is part of it: it is a common good, the heritage of all humanity, not the private property of one generation or one country. Here we find the direct link with the common good and the universal destination of goods.
The preferential option for the poor
From this centre follows a non-negotiable consequence: in the context of present inequalities, serving the common good demands a preferential option for the poor.
"In the present condition of global society, where injustices abound and growing numbers of people are deprived of basic human rights and considered expendable, the principle of the common good immediately becomes, logically and inevitably, a summons to solidarity and a preferential option for the poorest of our brothers and sisters." — Pope Francis, Laudato si', § 158[23]
Integral ecology is therefore not socially neutral: it leans towards those who suffer. It is the direct extension of solidarity and of attention to poverty. An ecological policy that aggravated the misery of the weakest would betray its own principle.
Justice between generations
Integral ecology finally extends into time. The common good is not only that of the living: it includes those who will come after us. Intergenerational justice is, for Pope Francis, "a basic question of justice," since the earth we receive also belongs to the poor of the future[24].
"What kind of world do we want to leave to those who come after us, to children who are now growing up? This question not only concerns the environment in isolation... The world is a gift which we have freely received and must share with others." — Pope Francis, Laudato si', § 160[25]
This question — "what kind of world do we want to leave behind?" — is the affective pivot of the whole encyclical. It shifts the ecological debate from a calculation of interests to an act of love towards future generations. Thinking of them is not an option: it is a demand of justice and gratitude for a world we did not make. This responsibility joins the one that founds the family, the first transmission between generations.
The technocratic paradigm: the root of the evil
Integral ecology does not merely describe the links: it names the root of their rupture. For Pope Francis, the deep evil is not first this or that pollution, but a mentality: the "technocratic paradigm", this way of relating to the world as raw material, infinitely available and manipulable.
"There is a tendency to believe that every increase in power means 'an increase of progress itself'... as if reality, goodness and truth automatically flowed from technological and economic power as such." — Pope Francis, Laudato si', § 105[26]
This paradigm rests on a lie: that of the "infinite availability of the goods of the planet"[27]. It treats nature, but also man, as an object to exploit. That is why Pope Francis speaks of a "misguided anthropocentrism" (LS 115-121): not man placed too high, but man cut off from God and others, become a dominator without limits. The way out of the crisis is therefore not only technical: it presupposes a conversion of outlook, a change of paradigm.
Does integral ecology forbid sacrificing man?
Here is played out the dividing line between Catholic ecology and certain contemporary ecologisms. Many green discourses are ready to sacrifice man to save nature: reducing populations, devaluing nascent life, presenting the birth of a child as a threat to the planet. Integral ecology frontally refuses this logic. For it, defending nature and defending the human person never oppose each other: it is the same combat.
No ecology without an adequate anthropology
Pope Francis lays down an unambiguous principle: there can be no true ecology without a just vision of man.
"There can be no ecology without an adequate anthropology. When the human person is considered as simply one being among others, the product of chance or physical determinism, then 'our overall sense of responsibility wanes'." — Pope Francis, Laudato si', § 118[28]
In other words, an ecology that demotes man to the rank of an animal among animals saws off the branch on which it sits: it abolishes the only being capable of moral responsibility. The greatness of man is not the enemy of nature; it is its guardian.
The coherence that may not be broken: embryo, disability, the poor
From this principle, Pope Francis draws a formidable coherence, which unmasks the contradictions of secularized ecologism:
"When we fail to acknowledge as part of reality the worth of a poor person, a human embryo, a person with disabilities... it becomes difficult to hear the cry of nature itself." — Pope Francis, Laudato si', § 117[29]
The same indifference that discards the embryo, the disabled or the poor ends up discarding nature: it is the same "throwaway culture". That is why Laudato si' states in black and white that "concern for the protection of nature is also incompatible with the justification of abortion"[30]. One cannot be indignant for a forest and remain cold before an unborn child: that would abandon the very principle of "everything is connected".
Against anti-natalism and Malthusianism
Finally, integral ecology rejects the Malthusian temptation to blame birth rates rather than injustice. Pope Francis directly targets those who present demographic growth as the cause of ecological ills:
"Instead of resolving the problems of the poor and thinking of how the world can be different, some can only propose a reduction in the birth rate... This is one way of refusing to face the issues, blaming demographic growth." — Pope Francis, Laudato si', § 50[31]
The real problem, the encyclical answers, is not that there are too many men, but that there is too much waste and too little sharing: an "extreme and selective consumerism" on the part of a minority[32]. Integral ecology therefore asks not for fewer men, but for another way of dwelling on the earth. That is what makes it irreducible to a disguised anti-natalism.
Ecological conversion
Because the root of the evil is spiritual — a heart that wants to dominate instead of receiving — the remedy is too. Laudato si' calls for an ecological conversion: an interior change that transforms the relationship to the world into a relationship of gratitude.
"Living our vocation to be protectors of God's handiwork is essential to a life of virtue; it is not an optional or a secondary aspect of our Christian experience." — Pope Francis, Laudato si', § 217[33]
This conversion is not anxious militancy. It is born of praise of the Creator and translates into the small gestures of daily life, which no calculation measures. Here the Pope cites the "little way of love" of Saint Thérèse of the Child Jesus:
"Saint Thérèse of Lisieux invites us to practise the little way of love, not to miss out on a kind word, a smile or any small gesture which sows peace and friendship. An integral ecology is also made up of simple daily gestures." — Pope Francis, Laudato si', § 230[34]
Saint Francis of Assisi, figure of integral ecology
The patron of this spirituality is Saint Francis of Assisi, whose Canticle of the Creatures gives the encyclical its title ("Laudato si', mi' Signore" — "Praise be to you, my Lord"). Pope Francis sees in him "the example par excellence of care for the vulnerable and of an integral ecology", because he inseparably united love of God, of the poor and of creation[35]. His praise does not adore nature: it praises God through it. That is exactly the Catholic balance, developed separately in Safeguarding Creation: creation is respected as gift and sign of the Creator, never divinized.
How does integral ecology fit with the other principles?
Integral ecology is not one more principle alongside the others: it is rather a way of linking them. It takes each principle of social doctrine and shows that it has an ecological face, and that ecology has a social face. The following table summarizes these interlockings.
| Social principle | Its face in integral ecology | Concrete consequence |
|---|---|---|
| Dignity of the person | No ecology without an adequate anthropology (LS 118) | Man is guardian, never a mere element of the biosphere |
| Common good | Unifying heart of integral ecology (LS 156) | The environment is a common good of all humanity |
| Universal destination of goods | The earth is given to all | No one may monopolize or destroy what is destined for all |
| Solidarity | Preferential option for the poor (LS 158) | Degradation strikes the weakest first: protect them first |
| Intergenerational justice | What world to leave to future generations? (LS 160) | Receive the earth as a heritage to transmit |
| Subsidiarity | Ecology of daily life (LS 147) | Care begins in the neighbourhood, the town, the family |
The common thread is always the same: "everything is connected". That is what makes integral ecology less a new chapter of social doctrine than a key for reading the whole. For the discipline of daily ecological discernment, see subsidiarity; for the human displacements caused by environmental crises, migration.
To go further
- Safeguarding Creation — the biblical principle of caring for creation: "till and keep", man as steward, neither tyrant nor worshipper.
- What Does the Church Say About Ecology? — the official teaching summarized for the faithful.
- What to Think of Ecology? — the apologetic dossier of cultural objections.
- The Common Good — the unifying heart of integral ecology.
- The Universal Destination of Goods — the earth given to all, foundation of ecological justice.
- Solidarity — the preferential option for the poor in the socio-environmental crisis.
- The Dignity of the Human Person — why there is no ecology without an adequate anthropology.
Notes and References
Pope Francis, encyclical Laudato si', 24 May 2015, § 139: "There are not two separate crises, one environmental and the other social, but rather one complex crisis which is both social and environmental. Strategies for a solution demand an integrated approach to combating poverty, restoring dignity to the excluded, and at the same time protecting nature." Official text on vatican.va.
1 7Pope Francis, Laudato si', § 49: "A true ecological approach always becomes a social approach; it must integrate questions of justice in debates on the environment, so as to hear both the cry of the earth and the cry of the poor."
2 8Saint Paul VI, encyclical Populorum Progressio, 26 March 1967, § 14: "Development cannot be limited to mere economic growth. In order to be authentic, it must be complete: integral, that is, it has to promote the good of every man and of the whole man." Text on vatican.va.
3 10The formula "everything is connected" (and the variant "everything is closely interrelated") runs like a refrain through Laudato si': cf. §§ 16, 91, 117, 138, 142, 240. It expresses the encyclical's central thesis on the interconnection of reality.
4Pope Francis, Laudato si', § 117: "Everything is connected. If the human being declares himself autonomous from reality and sets himself up as absolute master, the very basis of his existence collapses."
5Pope Francis, Laudato si', § 139: "an integrated approach to combating poverty, restoring dignity to the excluded, and at the same time protecting nature" (same paragraph as the thesis of the single crisis).
6Pope Francis, Laudato si', §§ 62-63: the encyclical explicitly roots its ecology in faith in the Creator God and in the convictions of faith, refusing to reduce the care of our common home to a purely ideological or technical cause.
9Pope Francis, motu proprio Humanam progressionem, 17 August 2016: institution of the Dicastery for Promoting Integral Human Development, in force since 1 January 2017, bringing together the former councils for Justice and Peace, Cor Unum, the pastoral care of migrants and health workers, plus a section for ecology. Institutional manifestation of integral ecology.
11Saint John Paul II, encyclical Centesimus Annus, 1 May 1991, § 38: "Not only has God given the earth to man... but man too is God's gift to man. He must therefore respect the natural and moral structure with which he has been endowed." Formulation of "human ecology". Cf. Safeguarding Creation.
12Benedict XVI, encyclical Caritas in Veritate, 29 June 2009, § 51: "The book of nature is one and indivisible: it takes in not only the environment but also life, sexuality, marriage, the family, social relations: in a word, integral human development." Official text on vatican.va.
13Pope Francis, Laudato si', § 139: "Nature cannot be regarded as something separate from ourselves or as a mere setting in which we live. We are part of nature, included in it and thus in constant interaction with it."
14Pope Francis, Laudato si', § 142: "If everything is related, then the health of a society's institutions affects the environment and the quality of human life... Every violation of solidarity and civic friendship harms the environment." Formulation of the "ecology of institutions".
15Pope Francis, Laudato si', §§ 143-146 (section "Cultural ecology"): the disappearance of a culture "can be just as serious, or even more serious, than the disappearance of a species of plant or animal" (§ 145); the need to attend to local cultures and indigenous peoples rather than imposing a uniform model.
16Pope Francis, Laudato si', §§ 147-149 (section "The ecology of daily life"): importance of the concrete living environment, housing, urban space and the fate of the poorest in overcrowded cities.
17Pope Francis, Laudato si', § 148: witness that even in precarious conditions, warm human bonds and mutual aid make an environment more habitable — "generous creativity" and "a sense of belonging" prevail.
18Pope Francis, Laudato si', § 155: "The acceptance of our bodies as God's gift is vital for welcoming and accepting the entire world as a gift from the Father and our common home, whereas thinking that we enjoy absolute power over our own bodies turns, often subtly, into thinking that we enjoy absolute power over creation."
19Pope Francis, Laudato si', § 156: "Integral ecology is inseparable from the notion of the common good, a central and unifying principle of social ethics." (The paragraph links integral ecology and the common good.)
20 21Pope Francis, Laudato si', § 157: the common good presupposes respect for the person and his fundamental rights, social well-being and the development of intermediate groups according to the principle of subsidiarity.
22Pope Francis, Laudato si', § 158: "In the present condition of global society, where injustices abound and growing numbers of people are deprived of basic human rights and considered expendable, the principle of the common good immediately becomes, logically and inevitably, a summons to solidarity and a preferential option for the poorest of our brothers and sisters."
23Pope Francis, Laudato si', § 159: "The notion of the common good also extends to future generations... We can no longer speak of sustainable development apart from intergenerational solidarity." Justice between generations is presented as a basic question of justice.
24Pope Francis, Laudato si', § 160: "What kind of world do we want to leave to those who come after us, to children who are now growing up?... The world is a gift which we have freely received and must share with others."
25Pope Francis, Laudato si', § 105: "There is a tendency to believe that every increase in power means 'an increase of progress itself'... as if reality, goodness and truth automatically flowed from technological and economic power as such." Critique of the technocratic paradigm (cf. §§ 101-114).
26Pope Francis, Laudato si', § 106: the technocratic paradigm rests on "the lie of the infinite availability of the goods of the planet", which leads to squeezing it beyond its limits.
27Pope Francis, Laudato si', § 118: "There can be no ecology without an adequate anthropology. When the human person is considered as simply one being among others, the product of chance or physical determinism, then 'our overall sense of responsibility wanes'."
28Pope Francis, Laudato si', § 117: "When we fail to acknowledge as part of reality the worth of a poor person, a human embryo, a person with disabilities... it becomes difficult to hear the cry of nature itself. Everything is connected."
29Pope Francis, Laudato si', § 120: "Since everything is interrelated, concern for the protection of nature is also incompatible with the justification of abortion." Decisive statement of the pro-life coherence of integral ecology.
30Pope Francis, Laudato si', § 50: critique of the Malthusian answer — "instead of resolving the problems of the poor... some can only propose a reduction in the birth rate" — and designation of the true culprit: "extreme and selective consumerism on the part of some". The encyclical refuses anti-natalism as a false ecological solution.
31 32Pope Francis, Laudato si', § 217: "Living our vocation to be protectors of God's handiwork is essential to a life of virtue; it is not an optional or a secondary aspect of our Christian experience." Call to "ecological conversion" (cf. §§ 216-221).
33Pope Francis, Laudato si', § 230: "Saint Thérèse of Lisieux invites us to practise the little way of love, not to miss out on a kind word, a smile or any small gesture which sows peace and friendship. An integral ecology is also made up of simple daily gestures."
34Pope Francis, Laudato si', § 10: Saint Francis of Assisi is presented as "the example par excellence of care for the vulnerable and of an integral ecology lived with joy and authenticity", because he united love of God, of the poor and of all creation. The encyclical's title takes up the Canticle of the Creatures.
35