NASA Messenger image of the Matisse crater on Mercury
The village idiot, in other words. Henri Matisse was known in his home town of Bohain, France as a ner-do-well. A weirdo, who on the national level was called a "wild beast." What caused this buttoned-down man of the north to become the wild man of art?
My posts on Henri Matisse.
Matisse said the act of painting was for him like kicking down a door, or slitting an abscess with a penknife.
Henry Matisse on his painting:
I do it in self-defense.
You would do well to read Spurling's article about the sartorial Matisse and her biography of him.
Now the Vatican will open a Matisse room to house a collection.