Beauty is one of those great mysteries of nature, whose influence we all see and feel; but a general, distinct idea of its essential must be classed among the truths yet undiscovered. If this idea were geometrically clear, men would not differ in their opinions upon the beautiful, and it would be easy to prove what true beauty is.
Johann Joachim Winckelmann,1764
…there can be no rule by which someone could be compelled to acknowledge that something is beautiful…
Immanuel Kant,1790