Patience serves us against insults precisely as clothes do against the cold. For if you multiply your garments as the cold increases, that cold cannot hurt you; in the same way increase your patience under great offenses, and they cannot hurt your feelings.

You will never have a greater or lesser dominion than that over yourself.

Of the original phenomena, light is the most enthralling.

Love shows itself more in adversity than in prosperity; as light does, which shines most where the place is darkest.

The first object of the painter is to make a flat plane appear as a body in relief and projecting from that plane

Painting is concerned with the ten things you can see: these are darkness and brightness, substance and color, form and place, remoteness and nearness, movement and rest.

Learning is the only thing that never disappoints us.