"My purpose is, by Gods assistance, to set forth the Art of painting, as in old times it hath begun, as it was promoted, as it came to that wonderfull perfection mentioned in ancient Authors. The first booke toucheth the first beginnings of Picture. The second booke propoundeth diverse meanes tending to the advancement of this Art. The third booke speaketh of the maine grounds of Art, the which being well observed by the old Artificers, made them come neerer to the height of perfection."

"You must do over the same subject ten times, a hundred times. In art nothing must appear accidental, even a movement."

"...It is because of this that one can admittedly also attribute to Spinozism that calming effect, which, among other things, Goethe praised in it; Spinozism is really the doctrine which sends thought …"

"Old age is far more than white hair, wrinkles, the feeling that it is too late and the game finished, that the stage belongs to the rising generations. The true evil is not the weakening of the body, …"

"In the development of intelligence nothing can be more "basic" than learning how to ask productive questions. Many years ago, in Teaching as a Subversive Activity, Charles Weingartner and I expressed …"