The eye is the window of the human body through which it feels its way and enjoys the beauty of the world.

The boundaries of bodies are the least of all things.

In fact, whatever exists in the universe, in essence, in appearance, in the imagination, the painter has first in his mind and then in his hands ... it lies in his power to create them . . .

First study the science, and then practice the art which is born of that science.

Truth is so excellent, that if it praises but small things they become noble.

The knowledge of the past times and of the places of the earth is both an ornament and nutriment to the human mind.

Details make perfection, and perfection is not a detail.