The painter strives and competes with nature.

He who wishes to see how the soul inhabits the body should look to see how that body uses its daily surroundings. If the dwelling is dirty and neglected, the body will be kept by its soul in the same condition, dirty and neglected.

Mechanics is the paradise of the mathematical sciences because by means of it one comes to the fruits of mathematics.

Advertisers constantly invent cures to which there is no disease.

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

Given the cause nature produces the effect in the briefest manner that it can employ.

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