The best answer I could find is that he thought inspiration came from hard work and discipline. A quote that supports this point would be when he said: "To know what you're going to draw, you have to begin drawing." So, inspirations doesn't just happen by chance.
The artistic representation may be exaggerated?
The answer that you are looking for is letter A.
It helps relieve pressure and it calms down your brain so you can think clearly.
