The natural desire of good men is knowledge.
Our body is dependent on heaven and heaven on the Spirit.
The five senses are the ministers of the soul.
Mechanics is the paradise of the mathematical sciences because by means of it one comes to the fruits of mathematics.
All our knowledge is the offspring of our perceptions.
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 . . .