The perception of beauty is a moral test.

A primary function of art and thought is to liberate the individual from the tyranny of his culture in the environmental sense and to permit him to stand beyond it in an autonomy of perception and judgment.

It is the function of art to renew our perception. What we are familiar with we cease to see. The writer shakes up the familiar scene and as if by magic we see a new meaning in it.

I'm not angry I'm not an angry person but I do sometimes like playing with the perception of anger as in pretending that I'm more angry than I actually am and sometimes it works quite well.