Ask counsel of him who rules himself well.

The painter will produce pictures of little merit if he takes the works of others as his standard.

Everything proceeds from everything else and everything becomes everything, and everything can be turned into everything else.

The body of the earth is of the nature of a fish... because it draws water as its breath instead of air.

The first object of the painter is to make a flat plane appear as a body in relief and projecting from that plane

If you cause your ship to stop and place the head of a long tube in the water and place the outer extremity to your ear, you will hear ships at a great distance from you.

Nothing is more apt to deceive us than our own judgment of our work. We derive more benefit from having our faults pointed out by our enemies than from hearing the opinions of friends.