Any use of a human being in which less is demanded of him and less is attributed to him than his full status is a degradation and a waste.

The simplest type of breakdown exhibits itself as an oscillation in a goal-seeking process which appears only when that process is actively invoked.

Am I really a good mathematician?

A professor is one who can speak on any subject - for precisely fifty minutes.

Progress imposes not only new possibilities for the future but new restrictions.

Any useful logic must concern itself with Ideas with a fringe of vagueness and a Truth that is a matter of degree.

What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.