"Nothing is beautiful, only man: on this piece of naivete rests all aesthetics, it is the first truth of aesthetics. Let us immediately add its second: nothing is ugly but degenerate man - the domain of aesthetic judgment is therewith defined"

This quote by Friedrich Nietzsche recommends that appeal is subjective, and that it is only through human perception and interpretation that something can be thought about stunning. The quote likewise suggests that ugliness is an outcome of human corruption or decay. Therefore, the domain of visual judgment is limited to the human experience and understanding, and aesthetic appeal is based on the dichotomy between gorgeous and degenerate guy.