[yosito]

Our/us refers to humanity. I'm a humanist. Though I suppose other species also have evolved a moral sense.

[kashyapc]

Richard Dawkins once used the word "humane-ist" (and humane-ism) to be considerate of other species. Though I like the idea, the word feels a bit "stretched"; I don't know why. (Maybe it's the humanist in me that's speaking :-))