The controversy around Amoris Laetitia made me think about the question of what constitutes repentence and what constitutes penance, in their sacramental dimension.  Penance is something both spiritual and physical. Ecological thinking and ecological action can be a very real form of penance for the sins we have committed against our neighbor. There is something very sacramental and very Catholic about that: about giving importance to small-scale, personalized actions whose soul is the re-establishment of justice: penance. (Though arrogant, thoughtless and superficial people will call it a waste of time.)  Penance is ecological. Penance has an ecclesiological dimension, and therefore it has also a cosmological and thus ecological dimension.