In every art we are always obliged to return to the accepted means of expression, the conventional language of the art. What is a black-and-white drawing but a convention to which the beholder has become so accustomed that with his mind's eye he sees a complete equivalent in the translation from nature?
I don't divide the world into the weak and the strong, or the successes and failures. . . I divide the world into the learners and non-learners.