"To speak algebraically, Mr. M. is execrable, but Mr. G. is (x + 1)- ecrable."

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If we possessed a thorough knowledge of all the parts of the seed of any animal (e.g. man), we could from that alone, be reasons entirely mathematical and certain, deduce the whole conformation and figure of each of its members, and, conversely if we knew several peculiarities of this conformation, we would from those deduce the nature of its seed.

— Rene Descartes