Goethe on being an artist:

“It seems that two qualities are necessary if a great artist is to remain creative to the end of a long life; he must on the one hand retain an abnormally keen awareness of life, he must never grow complacent, never be content with life, must always demand the impossible and when he cannot have it, must despair. The burden of the mystery must be with him day and night.”
– Goethe