“The deeper education consists in unlearning one's first education.”

“What one wrote playfully, another reads with tension and passion; what one wrote with tension and passion, another reads playfully.”

“To see is to forget the name of the thing one sees.”

“One should be light like a bird, and not like a feather.”

“How can one not feel enthusiasm for the man who never said anything vague?”

“Degas is one of the very few painters who have given the floor its true importance.”

“A man who is of 'sound mind' is one who keeps his inner madman under lock and key.”