Any intelligent fool can make things bigger,
more complex, and more violent.
It takes a touch of genius -- and a lot of courage --
to move in the opposite direction.
Imagination is more important than knowledge.
Anyone who has never made a mistake has never tried anything new.
Great spirits have often encountered violent opposition from weak minds.
Common sense is the collection of prejudices acquired by age eighteen.
The secret to creativity is knowing how to hide your sources.
If A is a success in life, then A equals x plus y plus z.
Work is x; y is play; and z is keeping your mouth shut.
Two things are infinite: the universe and human stupidity;
and I'm not sure about the the universe.
I know not with what weapons World War III will be fought,
but World War IV will be fought with sticks and stones.