Quotes from my blackboard during October:

Experience is the hardest kind of teacher. It gives you the test first, and the lesson afterward.

What, after all, is mathematics but the poetry of the mind, and what is poetry but the mathematics of the heart?

If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.

Black holes are where God divided by zero.

Nothing produces such odd results as trying to get even.

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