[ Text accompanying sketch of man with parachute :] If a man have a tent made of linen of which the apertures have all been stopped up, and it be twelve braccia across and twelve in depth, he will be able to throw himself down from any height without sustaining any injury.

Thou, O God, dost sell us all good things at the price of labor.

Nothing can be loved or hated unless it is first known.

Necessity is the theme and the inventress, the eternal curb and law of nature.

Just as eating against one’s will is injurious to health, so study without a liking for it spoils the memory, and it retains nothing it takes in.

Cheerfulness is proper to the cock, which rejoices over every little thing, and crows with varied and lively movements.

Anyone who in discussion relies upon authority uses, not his understanding, but rather his memory.

Sculpture, a very noble art, is one that does not in the execution require the same supreme ingenuity as the art of painting, since in two most important and difficult particulars, in foreshortening and in light and shade … the painter has to invent a process, [whereas] sculpture is helped by nature.

A good painter is to paint two main things, men and the working of man’s mind.

The idea or the faculty of imagination serves as both rudder and bridle to the senses, inasmuch as the thing imagined moves the sense.