The new encyclical by Pope Francis, Laudato Si’: On the Care of our Common Home, contains many references to “integral ecology,” including an entire chapter by that title.

It’s relatively clear that Francis is working with the integral ecology proposed by the Brazilian liberation theologian Leonardo Boff, who draws on the general ecology of Félix Guattari and the integral ecology proposed by the cultural historian Thomas Berry. Regarding Boff’s influence, consider the Pope’s allusion to Boff’s Cry of the Earth, Cry of the Poor. “Today, however, we have to realize that 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” (# 49). The Pope’s sense of integral ecology is also clearly influenced by the ecological sensibility of St. Francis of…