"To be a great painter, one must first be a good human being."

"I am also surprised that Your Lordship should complain as much about the price as about the canvas, but if Your Lordship wishes to return it as he did the sketch of Homer, I will do another."

"A student full of doubt is unable to move forwards and to judge well the truth."

"Light is the most important element in painting."

"He who is not a master of himself will never be a master of painting."