[The] humanization of mathematical teaching, the bringing of the matter and the — Cassius Jackson Keyser
If people would stop objectifying abstractions (which they probably never will), or — Cassius Jackson Keyser
The present is no more exempt from the sneer of the future than the past has been. — Cassius Jackson Keyser
The validity of mathematical propositions is independent of the actual world-the world — Cassius Jackson Keyser