To imagine is the characteristic act, not of the poet's mind, or the painter's, or the scientist's, but of the mind of man.

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.

There are places we fear, places we dream, places whose exiles we became and never learned it until, sometimes, too late.

I thought one only had to speak Latin through one's nose and bite off the end.

Canadians are more polite when they are being rude than Americans are when they are being friendly.

Teamwork - everything is one. You can connect with the emptiness of all things. All things are empty.

We do not need to have an agreed set of goals before we do something ambitious!

Disbelief is catching. It rubs off on people.

If we have the right to use our reason, we certainly have the right to act in accordance with it, and no god can have the right to punish us for such action

To be successful at anything, you need the right to fail, not just occasionally.

...the change was adjustment without improvement.