It is every man’s obligation to put back into the world at least the equivalent of what he takes out of it.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
It has become appallingly obvious that our technology has exceeded our humanity.
Two things are infinite: the universe and human stupidity; and I’m not sure about the universe.
I am neither especially clever nor especially gifted. I am only very, very curious.
As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.
This heroism at command, this senseless violence, this accursed bombast of patriotism how intensely I despise them!
Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
‘Computers are incredibly fast, accurate, and stupid: humans are incredibly slow, inaccurate and brilliant; together they are powerful beyond imagination.
If we knew what we were doing, it would not be called research, would it?
Do not worry too much about your difficulties in mathematics, I can assure you that mine are still greater.
You cannot prevent and prepare for war at the same time.
I believe in standardizing automobiles, not human beings.
The world is a dangerous place to live; not because of the people who are evil, but because of the people who don’t do anything about it.
How on earth are you ever going to explain in terms of chemistry and physics so important a biological phenomenon as first love?