Perspective is the rein and rudder of painting.

Thirst will parch your tongue and your body will waste through lack of sleep ere you can describe in words that which painting instantly sets before the eye.

Not to punish evil is equivalent to authorizing it.

He who can copy can do.

One’s thoughts turn towards Hope.

What induces you, oh man, to depart from your home in town, to leave parents and friends, and go to the countryside 72 over mountains and valleys, if it is not for the beauty of the world of nature?

Every part is disposed to unite with the whole, that it may thereby escape from its own incompleteness.

To me it seems that those sciences are vain and full of error which are not born of experience, mother of all certainty, first-hand experience which in its origins, or means, or end has passed through one of the five senses.

Reprove your friend in secret and praise him openly.

The painter will produce pictures of little merit if he takes the works of others as his standard.