Science is a wonderful thing if one does not have to earn one's living at it.

Matter is spirit reduced to point of visibility.

If you want different results, do not do the same things.

I have come to know the mutability of all human relationships and have learned to insulate myself against both heat and cold so that a temperature balance is fairly well assured.

Don't be too hard on me. Everyone has to sacrifice at the altar of stupidity from time to time.

Concern for man himself must always constitute the chief objective of all technological effort

Knowledge is dead; the school, however, serves the living.