[about Archimedes:] . . . being perpetually charmed by his familiar siren, that is, by his geometry, he neglected to eat and drink and took no care of his person; that he was often carried by force to the baths, and when there he would trace geometrical figures in the ashes of the fire, and with his finger draw lines upon his body when it was anointed with oil, being in a state of great ecstasy and divinely possessed by his science.
Source: G. Simmons Calculus Gems, New York: McGraw Hill Inc., 1992.
Contributed by: Zaady