The young man should first learn perspective, then the proportions of objects. Next, copy work after the hand of a good master, to gain the habit of drawing parts of the body well; and then to work from nature, to confirm the lessons learned.

Whoever in debate quotes authority uses not intellect, but memory.

Learning is the only thing that never disappoints us.

People reveal themselves completely only when they are thrown out of the customary conditions of their life.

The cat is nature's masterpiece.

The knowledge of all things is possible

You don't get into trouble because of the things you don't know. It is the things you don't know you don't know that really get you into a mess.