The world can only be grasped by action, not by contemplation.

It is important that students bring a certain ragamuffin, barefoot irreverence to their studies; they are not here to worship what is known, but to question it.

No science is immune to the infection of politics and the corruption of power.

Ask an impertinent question and you are on the way to the pertinent answer.

Man is unique not because he does science, and his is unique not because he does art, but because science and art equally are expressions of his marvelous plasticity of mind.

Knowledge is an unending adventure at the edge of uncertainty.

The hand is the cutting edge of the mind.

We have to understand that the world can only be grasped by action, not by contemplation. The hand is more important than the eye ... The hand is the cutting edge of the mind.

Man masters nature not by force, but by understanding

Dissent is the mark of freedom.

One aim of physical sciences had been to give an exact picture the material world. One achievement of physics in the twentieth century has been to prove that that aim is unattainable.

If we start to complain, destruction is right at our door

No shepherd and one herd! Everybody wants the same, everybody is the same: whoever feels different goes voluntarily into a madhouse.

It had become boring to write: 'I like Clare Balding'. To say: 'I don't like Clare Balding' is much more newsworthy.

All State education is a sort of dynamo machine for polarizing the popular mind; for turning and holding its lines of force in the direction supposed to be most effective for State purposes.

Sometimes I feel only I can stop myself.

Everything seems asleep, and yet going on all the time. It is a goodly life that you lead, friend; no doubt the best in the world, if only you are strong enough to lead it!

I know that some people work differently, but I have to work from the inside out. It doesn't matter how big the character is, there has to be a truthful core.

Good education has got to be good entertainment.

In baseball, you don't know nothin'.