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.
MaimonidesContrast the experience with something worse and you cannot help feeling happy and grateful because... The change from trouble to comfort gives us more pleasure than uninterrupted comfort does.
MaimonidesInspire me with love for my art and for thy creatures. In the sufferer let me see only the human being.
Maimonides