[theonemind]

"It is impossible to separate a cube into two cubes, or a fourth power into two fourth powers, or in general, any power higher than the second, into two like powers. I have discovered a marvelous proof of this, which this margin is too narrow to contain" - Pierre De Fermat

[thaumasiotes]

> It is impossible to separate a cube into two cubes

Later disproved by the Banach-Tarski theorem. ;D