Ptolemy was a Greek mathematician and astronomer in the 2nd century A.D. He was the author of the Almagest, an astronomical treatise containing the epicyclic and eccentrical models of planetary motion, and a series of other works on mathematics, geography, and astronomy. The "Geographia," one of his most important works, was a book on geography, which combined geography with history and myth in an attempt to describe the physical world in terms that were readily understandable to all men.
I know that I am mortal by nature, and ephemeral; but when I trace at my pleasure the windings to and fro of the heavenly bodies I no longer touch the earth with my feet: I stand in the presence of Zeus himself and take my fill of ambrosiaPtolemy
Mortal as I am, I know that I am born for a day. But when I follow at my pleasure the serried multitude of the stars in their circular course, my feet no longer touch the earth.Ptolemy
