Don't think about what you want to be, but what you want to do. Keep up some kind of a minimum with other things so that society doesn't stop you from doing anything at all.

I don't know what's the matter with people: they don't learn by understanding, they learn by some other way — by rote or something. Their knowledge is so fragile!

All the time you're saying to yourself, 'I could do that, but I won't,'--which is just another way of saying that you can't.

To decide upon the answer is not scientific. In order to make progress, one must leave the door to the unknown ajar ajar only.

We have a habit in writing articles published in scientific journals to make the work as finished as possible, to cover up all the tracks, to not worry about the blind alleys or describe how you had the wrong idea first, and so on. So there isn't any place to publish, in a dignified manner, what you actually did in order to get to do the work, although, there has been in these days, some interest in this kind of thing.

It is our responsibility to leave the people of the future a free hand.

Observation, reason, and experiment make up what we call the scientific method.