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

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.

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.

When I sang the line, 'Songs about Old Ireland.Songs about being young again.I wish I was young again,' twice people cried. I saw them.

It is absurd to think that the general public can ever make money out of market forecasts.

Our thoughts are either focused on what's eternal, life-changing, and true, or lost in the details of our temporary, selfish, false beliefs.

I'll be directing some more 'Private Practice' episodes when we wrap 'Caprica.'

The man or country that fights priestcraft and priests is to my mind striking deeper for freedom than can be struck anywhere.

The betrayal of a belief is not the same thing as ceasing to believe. If this were not so there would be no moral standards in the world at all.

I was in Yorkshire. We were a family of five and I used to be sent sometimes to get the rations for the week and was easily able to carry them back. It was like one egg and a tiny bit of tea.

I firmly believe every book was meant to be written.

Why should every single character be an honor student who goes around helping others and never doing anything wrong? Is that like the rule or something?

If you have infinite patience and perseverance, success is bound to come. No mistake in that.