How is error possible in mathematics?

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.

Be yourself! Fill yourself up with light and fly!

Those who insist on the dignity of their office show they have not deserved it.

... it's a blessed thing to love and feel loved in return.

The First Amendment is not a blanket freedom-of-information act. The constitutional newsgathering freedom means the media can go where the public can, but enjoys no superior right of access.

In a sense, what we do with the regional development agencies is to give them resources to look at the deficiencies in the economy in the regional areas, so they can address themselves to that.

I heard I'm going to have scenes with Lady Gaga so I'm hoping it's true. I know of one scene I have.

I do lots of weird voices and I kind of act out my raps. That's something that's always been in me.

There are no atheists in foxholes and there are no libertarians in financial crises.

Anything that makes us forget who we are and what we want; that way we can work in order to produce, reproduce, and earn money.