Pope Francis
Laudato Si' §212
II. Educating for the Covenant Between Humanity and the Environment
212 We must not think that these efforts are not going to change the world. They benefit society, often unbeknown to us, for they call forth a goodness which, albeit unseen, inevitably tends to spread. Furthermore, such actions can restore our sense of self-esteem; they can enable us to live more fully and to feel that life on earth is worthwhile.
Source: Laudato Si' (Vatican.va)