The history of scientific and technical discovery teaches us that the human race is poor in independent and creative imagination.

I think and think for months and years. Ninety-nine times, the conclusion is false. The hundredth time I am right.

Try first to be a man of value; success will follow.

A problem defined, is a problem half solved.

Human beings are not condemned, because of their biological constitution, to annihilate each other or to be at the mercy of a cruel, self-inflicted fate.

Out of the clutter find Simplicity

Time does not exist - we invented it