"Let us name him, even: Ctesibius of Alexandria, and allow him the credit of constructing an engine which was the ancestor of that given by the Arab to Charles the Great to drip away the moments of his last seven years."



Ctesibius was a Greek inventor and mathematician in Alexandria, Egypt (285-222 B.C.). He is credited with a number of inventions, including a water pump, pneumatic catapults and a more precise water clock.