Symmetry in your Face 

Ancient Greeks have been known to create art that is beautiful due to symmetry. They made columns that were symmetrical, buildings that were symmetrical, associated faces to beauty depending on the left part’s symmetry with the right.

Moving on a little forward in time, we meet Leonarda da Vinci, a brilliant mind able to create the most complex things. One such thing is the Vitruvian Man, which shows us a man with ideal body proportions based on symmetry. Da Vinci stated:

“there ought to be the greatest harmony in the symmetrical relations of the different parts to the general magnitude of the whole. ”

source: https://en.wikipedia.org/wiki/Vitruvian_Man#/