Neither a man nor a crowd nor a nation can be trusted to act humanely or to think sanely under the influence of a great fear.

The theoretical understanding of the world, which is the aim of philosophy, is not a matter of great practical importance to animals, or to savages, or even to most civilised men.

Thought is subversive and revolutionary, destructive and terrible, Thought is merciless to privilege, established institutions, and comfortable habit. Thought is great and swift and free.

To be without some of the things you want is an indispensable part of happiness.

Anything you're good at contributes to happiness.