"The organizing principle, which according to an eternal law creates the different essential organs of the body, and animates them, is not itself seated in one particular organ."

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It seems to us unwise to have insisted on teaching geometry to the younger Dionysius, tyrant of Syracuse, in order to make him a good king, but from Plato's point of view it was essential. He was sufficiently Pythagorean to think that without mathematics no true wisdom is possible.

— Bertrand Russell