Information is information; it is neither matter nor energy.

In all important respects, the man who has nothing but his physical power to sell has nothing to sell which it is worth anyone's money to buy

One of the chief duties of the mathematician in acting as an advisor ... is to discourage ... from expecting too much from mathematics.

Information is information; it is neither matter nor energy.

The Advantage is that mathematics is a field in which one's blunders tend to show very clearly and can be corrected or erased with a stroke of the pencil. It is a field which has often been compared with chess, but differs from the latter in that it is only one's best moments that count and not one's worst. A single inattention may lose a chess game, whereas a single successful approach to a problem, among many which have been relegated to the wastebasket, will make a mathematician's reputation.

The nervous system and the automatic machine are fundamentally alike in that they are devices, which make decisions on the basis of decisions they made in the past.

Mathematics is a field which has often been compared with chess, but differs from the latter in that it is only one's best moments that count and not one's worst.