Beauty is truth, truth beauty, that is all Ye know on earth, and all ye need to know.
The Greeks believed there to be three concomitants of beauty: symmetry, proportion, and harmony. This triad of principles infused their life. They were very much attuned to beauty as an object of love and something that was to be imitated and reproduced in their lives, architecture, Paideia and politics. They judged life by this mentality.