I am exhausted if I don't work.
Those who attempts to explain a picture are on the wrong track most of the time.
Whether he wants it or not, man is the instrument of nature; she imposes on him character and appearance.
When I paint I feel that all the artists of the past are behind me.
He can who thinks he can, and he can't who thinks he can't. This is an inexorable, indisputable law.
I don't work from nature, I work like nature.