Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.
There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
I am enough of an artist to draw freely upon my imagination. Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
If you can't explain it to a six year old, you don't understand it yourself.
If you want your children to be intelligent, read them fairy tales. If you want them to be more intelligent, read them more fairy tales.
Logic will get you from A to Z; imagination will get you everywhere.
Life is like riding a bicycle. To keep your balance, you must keep moving.
Anyone who has never made a mistake has never tried anything new.
I speak to everyone in the same way, whether he is the garbage man or the president of the university.
When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
Never memorize something that you can look up.
A clever person solves a problem. A wise person avoids it.
Science without religion is lame, religion without science is blind.
Reality is merely an illusion, albeit a very persistent one.
If we knew what it was we were doing, it would not be called research, would it?
I have no special talents. I am only passionately curious.
If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?
Try not to become a man of success. Rather become a man of value.
Any fool can know. The point is to understand.
Once you can accept the universe as matter expanding into nothing that is something, wearing stripes with plaid comes easy.
If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music.
The world as we have created it is a process of our thinking. It cannot be changed without changing our thinking.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
You never fail until you stop trying.
Great spirits have always encountered violent opposition from mediocre minds.
The most beautiful experience we can have is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science.
Gravitation is not responsible for people falling in love.
It is not that I'm so smart. But I stay with the questions much longer.
Creativity is intelligence having fun.
The measure of intelligence is the ability to change.
