The eye which turns from a white object in the light of the sun and goes into a less fully lighted place will see everything as dark.

A luminous body will appear more brilliant in proportion as it is surrounded by deeper shadow.

Music cannot be called otherwise than the sister of painting, for she is dependent upon hearing, a sense second to sight, and her harmony is composed of the union of its proportional parts sounded simultaneously, rising and falling in one or more harmonic rhythms.

Everything comes from everything, and everything is made out of everything, and everything returns into everything.

Feathers shall raise men even as they do birds towards heaven :- That is by letters written with their quills.

Patience serves as a protection against wrongs as clothes do against cold. For if you put on more clothes as the cold increases, it will have no power to hurt you. So in like manner you must grow in patience when you meet with great wrongs, and they will then be powerless to vex your mind.

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.