We are only fully human when we act as if the life beyond us matters.

...if he sees his fellow humans as anything more than complicated animals. Not so different from a deer or a wolf, knitted together with the same sinew but in another design.

The greatness of a nation and its moral progress can be judged by the way in which its animals are treated.

When we went back to our place, it was a mess. Everything from the smell of dead animals to dead people. But we were luckier than a lot of people. There are still people living in tents, still people homeless. We had nowhere else to go.

In the world which we know, among the different and primitive geniuses that preside over the evolution of the several species, there exists not one, excepting that of the dog, that ever gave a thought to the presence of man

Man is a clothed animal; almost.