When they discover the center of the universe, a lot of people will be disappointed to discover they are not it.
He who will not reason is a bigot; he who cannot is a fool; and he who dares not is a slave.
You have to have funny faces and words, you can't just have words. It is a powerful thing, and I think that's why it's hard for people to imagine that women can do that, be that powerful.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'
Posterity is as likely to be wrong as anyone else.
He was one of those men who think that the world can be saved by writing a pamphlet.
Choose the life that is most useful, and habit will make it the most agreeable.