The real question is not whether machines think but whether men do. The mystery which surrounds a thinking machine already surrounds a thinking man.

The real problem is not whether machines think but whether men do.

When we say that a man controls himself, we must specify who is controlling whom.

The juvenile delinquent does not feel his disturbed personality. The intelligent man does not feel his intelligence or the introvert his introversion.

The only geniuses produced by the chaos of society are those who do something about it. Chaos breeds geniuses. It offers a man something to be a genius about.

Science, not religion, has taught me my most useful values, among them intellectual honesty. It is better to go without answers than to accept those that merely resolve puzzlement.

The major difference between rats and people is that rats learn from experience.