The beginnings and ends of shadow lie between the light and darkness and may be infinitely diminished and infinitely increased. Shadow is the means by which bodies display their form. The forms of bodies could not be understood in detail but for shadow.

Wood feeds the fire which burns it.

Science is the observation of things possible, whether present or past; prescience is the knowledge of things 50 which may come to pass, though but slowly.

Look at light and admire its beauty. Close your eyes, and then look again: what you saw is no longer there; and what you will see later is not yet.

That painter who has no doubts will achieve little.

There is no higher or lower knowledge, but one only, flowing out of experimentation.

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.

Man has much power of discourse which for the most part is vain and false; animals have but little, but it is useful and true, and a small truth is better than a great lie.

Whatever you do in life, if you want to be creative and intelligent, and develop your brain, you must do everything with the awareness that everything, in some way, connects to everything else.

I’m not contented to capture the world. I want to change it.