Be thankful that you have a life, and forsake your vain and presumptuous desire for a second one.
If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.
People do not like to think. If one thinks, one must reach conclusions. Conclusions are not always pleasant.
I really had a lot of dreams when I was a kid, and I think a great deal of that grew out of the fact that I had a chance to read a lot.
Life has its own hidden forces which you can only discover by living.
Life is tough, but it's tougher when you're stupid.
Life can be pulled by goals just as surely as it can be pushed by drives.
Old age is by nature rather talkative.
If we couldn't laugh we would all go insane.
The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane.
Humility is really important because it keeps you fresh and new.
Is it not enough that 'things are cruel and blind'? Must we also be cruel and blind?
When one has not had a good father, one must create one.
Is it progress if a cannibal uses a fork?
Imagination and fiction make up more than three quarters of our real life.
I would rather entertain and hope that people learned something than educate people and hope they were entertained.
Between two evils, I always pick the one I never tried before.
Life does not need to mutilate itself in order to be pure.
I always like to look on the optimistic side of life, but I am realistic enough to know that life is a complex matter.
Everyone seems to have a clear idea of how other people should lead their lives, but none about his or her own.
We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths.