It is with logic that one proves; it is with intuition that one invents.

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.

Compassion is a sign of superficiality: broken destinies and unrelenting misery either make you scream or turn you to stone.

I love, love, love being an actor - it's still the hardest and scariest thing I do, outside of parenting. But I've always been someone who likes a busy day.

Nevertheless, this one fact should be apparent: turning the other cheek is a bribe. It is a valid form of action for only so long as the Christian is impotent politically or militarily.

A lost battle is a battle one thinks one has lost.

I'm 24 years old and yeah, I'm a different person and I'm definitely more mature, but these are the tops that I'm going to keep on wearing.

There will always be good and bad in every community.

Many have paid lip service to philosophy, but these men served it with their whole heart. He tastes nothing who has not tasted for himself.

I'm optimistic about the future. I'm excited about our prospects as a nation. I want to see peace. I want to see growing peace in America. It's our objective.

Entropy and optimism: the twin forces that make the world go around.

You can move beyond the ego's perspective and see reality from the perspective of a higher consciousness.