A good memory, which nature has endowed us with, causes things long past to seem present.

To discover the soul living in somebody's body, we watch the surrounding of the body, and if it's messy and disordered, so is the soul.

There is no result in nature without a cause; understand the cause and you will have no need of the experiment.

Music... is the shaping of the invisible.

Supreme happiness will be the greatest cause of misery, and the perfection of wisdom the occassion of folly.

Threats alone, are the weapons of the threatened man.

Perspective is the rein and rudder of painting.