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.

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.

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.

A genius is a man who has two great ideas.

Just when the devil tries to steer me in the wrong direction I learn how powerful God's GPS really is. (Evil will not re-route my journey). He has mapped my success to the final destination.

There is no such thing as unfortunate genius; if a man or woman is fit for work, God appoints the field.

I find that the love we share fills me up and makes me see and appreciate life in a different way.

A photograph is a souvenir of life!

A God you understood would be less than yourself.

A bridge is a meeting place . . . a possibility, a metaphor.

As American productivity, once the exuberant engine of national wealth, has dipped to an embarrassingly uncompetitive low, Americans have shaken their heads: the country's old work ethic is dead.

I remember when I met Picabo Street, you know, how in awe I was of her and how much she inspired me, and I really hope to be that for young kids.

The doctor's name was Sylvia. I told her she'd have a problem with me because Sylvia was my mother's name.

I love the international feeling In New Yokk. Different foods. Different people. There's everything here. Museums, theatre, there's so much to do I feel guilty about not doing too many things.