How wonderful that we have met with a paradox. Now we have some hope of making progress.

A physicist is just an atom's way of looking at itself.

Everything we call real is made of things that cannot be regarded as real.

If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.

An expert is a man who has made all the mistakes which can be made, in a narrow field.

When we measure something we are forcing an undetermined, undefined world to assume an experimental value. We are not measuring the world, we are creating it.

I go into the Upanishads to ask questions.

There are some things so serious you have to laugh at them.

The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.

Nothing exists until it is measured.

No, no, you're not thinking; you're just being logical.

Having a relationship with people of questionable character is like playing with a razor blade on your skin, and pretending to observe that it is harmful to your body.

Three things at least they [good politicians] must require

The catastrophe now threatening us is unprecedented - and we often confuse the unprecedented with the improbable.

Even in the most bold and daring acts, courage is a matter of the heart.

By myself walking, To myself talking.

Only a fool is not afraid.

Perhaps the hardest lesson of all is that there is no such thing as 'getting it right'-least of all with the promulgation of quality.

I've been collaborating a lot, because I like working that way. It's fun and keeps you moving forward.

Consider those whom you call your enemies and figure out what they should call you.

How rare and wonderful is that flash of a moment when we realize we have discovered a friend.