During the Renaissance, it served as the "hermetic" structure on which some of the great masterpieces were composed.
Plato, in his Timaeus, considered it the most binding of all mathematical relations and makes it the key to the physics of the cosmos.  During the Renaissance, it served as the "hermetic" structure on which some of the great masterpieces were composed. Phidias closely studied it and used it in his work, and consequently it was given the name phi.  FTP, name this constant, which accurate to three decimal places is 1.618.
Plato, in his Timaeus, considered it the most binding of all mathematical relations and makes it the key to the physics of the cosmos.  
The Golden Ratio or the Golden Mean