I just invent, then wait until man comes around to needing what I've invented.

Always tell only the truth, and all the truth, and do so promptly - right now.

How often I found where I should be going only by setting out for somewhere else.

People never leave a sinking ship until they see the lights of another ship approaching.

The opposite of nature is impossible.

Whatever humans have learned had to be learned as a consequence only of trial and error experience. Humans have learned only through mistakes.

The nearest each of us can come to God is by loving the truth.