If you can’t explain it to a six year old, you don’t understand it yourself.
I never think of the future. It comes soon enough.
Falling in love is not at all the most stupid thing that people do — but gravitation cannot be held responsible for it.
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.
The difference between genius and stupidity is; genius has its limits.
Science without religion is lame. Religion without science is blind.
Two things are infinite: the universe and human stupidity; and I’m not sure about the universe.
Logic will get you from A to Z; imagination will get you everywhere.
Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
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.
You have to learn the rules of the game. And then you have to play better than anyone else.
Unthinking respect for authority is the greatest enemy of truth.