A poem may be an instance of morality, of social conditions, of psychological history; it may instance all its qualities, but never one of them alone, nor any two or three; never less than all.
The innocent mansion of a panther's heart!
Men expect too much, do too little.
But in our age the appeal to authority is weak, and I am of my age.
The twilight is long fingers and black hair.
There is probably nothing wrong with art for art's sake if we take the phrase seriously, and not take it to mean the kind of poetry written in England forty years ago.