“Prediction is very difficult, especially if it’s about the future.”

One must always do what one really cannot.

There is no hope for any speculation that does not look absurd at first glance.

The opposite of a fact is falsehood, but the opposite of one profound truth may very well be another profound truth.

If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.

If we couldn’t laugh at ourselves, that would be the end of everything.

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

Physics is the belief that a simple and consistent description of nature is possible.

Some subjects are so serious that one can only joke about them.

Sometimes the child in one behaves a certain way and the rest of oneself follows behind, slowly shaking its head.

It is, indeed, perhaps the greatest prospect of humanistic studies to contribute through an increasing knowledge of the history of cultural development to that gradual removal of prejudices which is the common aim of all science.

We all know your idea is crazy. The question is whether it is crazy enough.

When it comes to atoms, language can be used only as in poetry. The poet, too, is not nearly so concerned with describing facts as with creating images and establishing mental connections.

Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.

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

It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we say about nature.

If you aren’t confused by quantum mechanics, you haven’t really understood it.

Art is difficult, transient is her reward.

~My instinct is to protect my children from pain. But adversity is often the thing that gives us character and backbone. It’s always been a struggle for me to back off and let my children go through difficult experiences.~

Everybody understands that acting is a really difficult job. It’s hard work. You’ve got to get dressed up, you’ve got to hang around with beautiful women. It’s difficult. It’s a problem.

We want one class of persons to have a liberal education, and we want another class of persons, a very much larger class, of necessity, in every society, to forego the privileges of a liberal education and fit themselves to perform specific difficult manual tasks.

After acknowledging that most law enforcement personnel are fair-minded and do a difficult job, it only takes one exception to create a terrible tragedy.

True lovers know how trifling a thing is money yet how difficult to blend with love!

Often, I am asked, ‘What was your father like?’ or, ‘What would he think?’ These are very difficult questions to answer, as I was so very young when I lost my father.

They looked great, you know the drawings of the guys playing looked great and bits of string around their necks. So it didn’t seem to be that difficult a thing to do, or that inaccessible.