As spoken by Kuhn in Gertrude by Hermann Hesse:

“What made you interested in composing?”… “I see,” he said slowly, “but why does it give you pleasure? You can’t express sorrow on paper and be done with it.”

“I don’t want to do that,” I replied. “I don’t want to thrust aside and be rid of anything but weakness and construction. I want to feel that pleasure and pain arise from the same source, that they are aspects of the same force and portions of the same piece of music, each beautiful and essential.”