the preface

It is the spectator, and not life, that art really mirrors.
Diversity of opinion about a work of art shows that the work is new, complex, and vital.
When critics disagree the artist is in accord with himself.
We can forgive a man for making a useful thing as long as he does not admire it. The only excuse for making a useless thing is that one admires it intensely.

All art is quite useless. 

Oscar Wilde, The Picture of Dorian Gray