[I would] rather discover one cause than gain the kingdom of Persia.

Durant (1939),Ch. XVI, §II, p. 352, citinas G.Grote, Plato and the Other Companions of Socrates (London, 1875), vol. 1, p. 68; and citing C. Bakewell, Sourcebook in Ancient Philosophy, New York, 1909, p. 62.

I would rather discover a single demonstration [in geometry] than become king of the Persians.