“I cannot see why it is necessary that every deduction from algebra should be bound to certain conventions incident to an earlier stage of mathematical learning, even supposing them to have been consistently used up to the point in question. I should not care if any one thought this treatise unalgebraical, but should only ask whether the premises were admissible and the conclusions logical.”

— Augustus De Morgan

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The Differential and Integral Calculus (1836)

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Augustus De Morgan 41

British mathematician, philosopher and university teacher (… 1806–1871

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