Ocupation: Philosopher
Life: March 30, 1135 - December 12, 1204
Birthday: March 30
Death: December 12
For the elements have the property of moving back to their place in a straight line, but they have no properties which would cause them to remain where they are, or to move otherwise than in a straight line. The rectilinear motions of these four elements when returning to their original place are of two kinds, either centrifugal, viz., the motion of the air and the fire; or centripedal, viz., the motion of the earth, and the water; and when the elements have reached their original place, they remain at rest.
source: "The Guide for the Perplexed".
topic: Wise, Moving, Two, Moving Back, Four Elements