II: Center c-print, framed slides, 2007 Visitors were told to raise the framed masks to their faces. "... our perception of beauty is hard wired into our being and based entirely on how closely one's features reflect phi in their proportions." – www.goldennumber.net The mask of idealized human facial beauty used in II: Center was developed by Dr. Stephen Marquardt and is based upon the proportions of phi, or The Golden Ratio (1.61803...)