A Quote by Pierre de Fermat on impossibility, power, and proof

In the margin of his copy of Diophantus' Arithmetica, Fermat wrote: To divide a cube into two other cubes, a fourth power or in general any power whatever into two powers of the same denomination above the second is impossible, and I have assuredly found an admirable proof of this, but the margin is too narrow to contain it.

Pierre de Fermat (1601 - 1665)

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