Human Species Quotes

Laughter is one of the very privileges of reason, being confined to the human species.

When you deal with something like compassion for physical pain, which we know is very, very old in evolution - we can find evidence for it in nonhuman species - the brain processes it at a faster speed. Compassion for mental pain took many seconds longer.

It is a pleasant thing to reflect upon, and furnishes a complete answer to those who contend for the gradual degeneration of the human species, that every baby born into the world is a finer one than the last.

The human species, according to the best theory I can form of it, is composed of two distinct races, the men who borrow and the men who lend.

I think it's realistic to have hope. One can be a perverse idealist and say the easiest thing: 'I despair. The world's no good.' That's a perverse idealist. It's practical to hope, because the hope is for us to survive as a human species. That's very realistic.