Astronomy is not the apex of science or of invention. But it is a test of the cast of temperament and mind that underlies a culture.

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.

Cohesion is the bane of effective independence.

I think it's always important to give immediate positive reinforcement.

Audiences in mainland China know how to discuss movies.

Skills can be taught. It's tough to teach heart. Talent is fairly common.

Instead of having a baby, why dont you get a tattoo of a baby first, and see how that works out for six months to a year, and then see if you're ready to have a baby.

Happiness is not mostly pleasure, it is mostly victory.

Sensitivity is equated with weakness. Feelings are for women. It's OK to express happiness or anger, but it's not OK to feel fear or sadness. This gets exaggerated in prison.

Independent of harmony rules, any color 'goes' or 'works' with any other color, presupposing that their quantities are appropriate.

Every individual who eats flesh food, whether an animal is killed expressely for him or not, is supporting the trade of slaughtering and contributing to the violent deaths of harmless animals.

War's Legitimate Object Is More Perfect Peace.