Richard Feynman - Letter to Koichi Mano, February 3, 1966

The worthwhile problems are the ones you can really solve or help solve, the ones you can really contribute something to.
Richard Feynman - Letter to Armando Garcia J, December 11, 1985
There is no harm in doubt and scepticism, for it is through these that new discoveries are made.
Richard Feynman - Caltech commencement address, 1974
The first principle is that you must not fool yourself - and you are the easiest person to fool.
Richard Feynman
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
Richard Feynman
The real question of government versus private enterprise is argued on too philosophical and abstract a basis. Theoretically, planning may be good. But nobody has ever figured out the cause of government stupidity and until they do (and find the cure) all ideal plans will fall into quicksand.
Richard Feynman
We are at the very beginning of time for the human race. It is not unreasonable that we grapple with problems. But there are tens of thousands of years in the future. Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.
Richard Feynman - Letter to Armando Garcia J, December 11, 1985
I was born not knowing and have had only a little time to change that here and there.
Richard Feynman
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.
Richard Feynman
I was born not knowing and have only had a little time to change that here and there.
Richard Feynman
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
Richard Feynman
I believe that a scientist looking at nonscientific problems is just as dumb as the next guy.
Richard Feynman
Physics is to math what sex is to masturbation.
Richard Feynman
Nature has a great simplicity and therefore a great beauty.
Richard Feynman - Letter to Koichi Mano
No problem is too small or too trivial if we can really do something about it.
Richard Feynman
Physicists like to think that all you have to do is say, these are the conditions, now what happens next?

- Richard Feynman - Letter to Koichi Mano, February 3, 1966