A mathematics teacher is a midwife to ideas.

A GREAT discovery solves a great problem but there is a grain of discovery in any problem.

What is the difference between method and device? A method is a device which you use twice.

The first rule of discovery is to have brains and good luck. The second rule of discovery is to sit tight and wait till you get a bright idea.

The result of the mathematician's creative work is demonstrative reasoning, a proof; but the proof is discovered by plausible reasoning, by guessing.

When introduced at the wrong time or place, good logic may be the worst enemy of good teaching.

If you cannot solve the proposed problem try to solve first some related problem.