Perspective is the rein and rudder of painting.

Men wrongly lament the flight of time, blaming it for being too swift; they do not perceive that its passage is sufficiently long, but a good memory, which nature has given to us, causes things long past to seem present.

Truth was always but the daughter of time.

It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.

A man was desired to rise from bed because the sun was already up. He replied: "If I had as far to go and as much to do as he has, I should be up by now; but having but a little way to go, I shall not get up yet."

The boundaries of bodies are the least of all things.

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