[G]eometry is not true, it is advantageous. – Henri Poincaré
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In most sciences one generation tears down what another has built and what one has established another undoes. In mathematics alone each generations adds a new story to the old structure. – Hermann Hankel
The Belief that man is outfitted with an immortal soul, differing altogether from the engines which operate the lower animals, is ridiculously unjust to them. The difference between the smartest dog and the stupidest man – H. L. Mencken