It is commonly, but erroneously, believed that it is easy to ask questions. A fool, it is said, can ask questions that a wise man cannot answer. The fact is that a wise man can answer many questions that a fool cannot ask.
Cassius Jackson KeyserMathematics, even in its present and most abstract state, is not detached from life. It is just the ideal handling of the problems of life.
Cassius Jackson KeyserThe validity of mathematical propositions is independent of the actual world-the world of existing subject-matters-is logically prior to it, and would remain unaffected were it to vanish from being. Mathematical propositions, if true, are eternal verities.
Cassius Jackson Keyser