Ask not what you can do for your country. Ask what's for lunch.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'
Prove all things; hold fast that which is good.
Illusions are art, for the feeling person, and it is by art that you live, if you do.
I guess we'd be living in a boring, perfect world if everybody wished everybody else well.
It's never just a game when you're winning.
The truth is always a compound of two half- truths, and you never reach it, because there is always something more to say.