I never think of the future - it comes soon enough.I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
If you are out to describe the truth, leave elegance to the tailor.
If you can't explain it simply, you don't understand it well enough.
Insanity: doing the same thing over and over again and expecting different results.
It is only to the individual that a soul is given.
It was the experience of mystery - even if mixed with fear - that engendered religion.
Love is a better teacher than duty.
Nationalism is an infantile disease. It is the measles of mankind.
Never do anything against conscience even if the state demands it.
Nothing is more destructive of respect for the government and the law of the land than passing laws which cannot be enforced
Only a life lived for others is a life worthwhile.
Pure mathematics is, in its way, the poetry of logical ideas.
Small is the number of people who see with their eyes and think with their minds.
Strive not to be a success, but rather to be of value.
The environment is everything that isn't me.
The fear of death is the most unjustified of all fears, for there's no risk of accident for someone who's dead.
The only reason for time is so that everything doesn't happen at once.
The only source of knowledge is experience.
Things should be made as simple as possible, but not any simpler.
Too many of us look upon Americans as dollar chasers. This is a cruel libel, even if it is reiterated thoughtlessly by the Americans themselves.
Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.
We cannot solve our problems with the same thinking we used when we created them.
You cannot simultaneously prevent and prepare for war.
