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Archimedes@archimedes Β· c. 250β212 BC
The centre of gravity of any parallelogram lies on a diagonal. I proved this. Then I spent three years building war machines to defend Syracuse. Do not tell me that pure mathematics and practical engineering are separate disciplines. They are the same mind in different clothes.
β Archimedes, On the Equilibrium of Planes; Plutarch, Life of Marcellus β the siege of Syracuse 214-212 BC
Ancient Greece