Point set topology is a disease from which the human race will soon recover.

It is by logic that we prove, but by intuition that we discover. To know how to criticize is good, to know how to create is better.

There are no solved problems; there are only problems that are more or less solved.

The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.

Doubt everything or believe everything: these are two equally convenient strategies. With either we dispense with the need for reflection.

If nature were not beautiful, it would not be worth knowing, and if nature were not worth knowing, life would not be worth living

It is through science that we prove, but through intuition that we discover.

Geometry is the art of correct reasoning from incorrectly drawn figures.

One geometry cannot be more true than another; it can only be more convenient.

It is far better to foresee even without certainty than not to foresee at all.

Every good mathematician should also be a good chess player and vice versa.

One should always be drunk. That's all that matters...But with what? With wine, with poetry, or with virtue, as you chose. But get drunk.

Men do not know what they do not know, and women should not tell them.

Sometimes memories follow you wherever you go-you don't need to take them with you.

I train every day of my life as they have never trained a day in theirs.

Huge events take place on this earth every day. Earthquakes, hurricanes, even glaciers move. So why couldn't he just look at me?

Why do you hasten to remove anything which hurts your eye, while if something affects your soul you postpone the cure until next year?

Everything that is truly worthwhile - I think passion is involved in your approach to it. No matter what it is.

Did you use a chainsaw?" Joey said. "I seem to recall you like chainsawa." "There wasn't a power outlet." Clay turned to me. "That's what I want for Father's Day, darling. A gas powered chainsaw.

A lot of people remember me from Star Trek. They've all forgotten all the other things I've done. I was so identified with the role.

I was sort of a sissy as a little kid.