Everything should be made as simple as possible, but not simpler.

There's a dark side to everything.

Realize that everything connects to everything else.

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.

Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.

A clever person solves a problem. A wise person avoids it.