“Everybody works according to his ability, some doing more, some doing less, but everyone ought to know whether he is doing good or harm. Artists are not released from that obligation, especially as there are no works of art which do neither harm nor good. If a book, a picture or a melody is accepted by a reader, a spectator or a listener, it means that the reader, spectator or listener has had his emotions stirred; and emotions must be either harmful or useful. They cannot be neutral.”
Book:My Profession