The basis of action on love, the brotherhood of all men, the value of the individual... the humility of the spirit.

Science is uncertain.

The thing that doesn't fit is the thing that is most interesting.

The female mind is capable of understanding analytic geometry... The difficulty may just be that we have never yet discovered a way to communicate with the female mind. If it is done in the right way, you may be able to get something out of it.

It does not matter who you are, or how smart you are, or what title you have, or how many of you there are, and certainly not how many papers your side has published, if your prediction is wrong then your hypothesis is wrong. Period.

You see, I get such fun out of thinking that I don't want to destroy this most pleasant machine that makes life such a big kick.

We absolutely must leave room for doubt or there is no progress and no learning. There is no learning without having to pose a question. And a question requires doubt. People search for certainty. But there is no certainty.