Why act sustainable?
Because you must. The world demands it and if you don’t, you will make others suffer.
Because you can. Living in line with the rest of all beings is what it is to be human.
Because you know. Life is the only thing that you know is real. You are here to live it fully. You are here to honour it. In yourself and in other beings.
Because you want to. Nobody wants to live on a barren planet, on a dying planet, on an ugly planet. Nobody wants to cause harm. Living sustainably is not the goal, it’s the path. If you want to live well, you have to live sustainably.