The painter who draws merely by practice and by eye, without any reason, is like a mirror which copies every thing placed in front of it without being conscious of their existence.

The painter's mind is a copy of the divine mind, since it operates freely in creating the many kinds of animals, plants, fruits, landscapes, countrysides, ruins, and awe-inspiring places.

Instrumental or mechanical science is the noblest and above all others, the most useful.

There is no object so large but that at a great distance from the eye it does not appear smaller than a smaller object near.

Let not your rage or malice destroy a life.

I have discovered that a screw-shaped device such as this, if it is well made from starched linen, will rise in the air if turned quickly.

I am still hopeful. A falcon, Time. But the coincidence is probably accidental.