Late evening, I looked to the eastern sky and found my old friends Andromeda, Pegasus, Perseus and Triangulum. Toward the horizon I could make out the tiny points of Pleiades.
Geometry has two great treasures: one is the Theorem of Phythagoras, the other the division of a line in extreme and mean ratio. The first we can compare to a mass of gold; the other we may call a precious jewel.Johannes Kepler