Teach principles not formulas.

Philosophers say a great deal about what is absolutely necessary for science, and it is always, so far as one can see, rather naive, and probably wrong.

Fall in love with some activity, and do it! Nobody ever figures out what life is all about, and it doesn't matter.

People often think I'm a faker, but I'm usually honest, in a certain way--in such a way that often nobody believes me!

There is no learning without having to pose a question. And a question requires doubt.

God was invented to explain mystery. God is always invented to explain those things that you do not understand.

I don't have to be good because they think I'm going to be good.