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

There's a dark side to everything.

A ship is always safe at the shore - but that is NOT what it is built for.

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.

Try to become not a man of success, but try rather to become a man of value.

Science without religion is lame. Religion without science is blind.