The mission of art is to represent nature not to imitate her.

There is force and vitality in a first sketch from life which the after-work rarely has. You want a picture to seize you as forcibly as if a man had seized you by the shoulder! It should impress you like reality!

Art teaches you the philosophy of life, and if you can't learn it from art, you can't learn it at all. It shows you that there is no perfection. There is light, and there is shadow. Everything is in half tint.

How are things visible? Can you see an egg against a white background? Not by drawing a line around it can you make it evident.

Beauty is that little something that fills the whole world, and is contained neither in a single straight nose, a long eyelash, nor a blue mountain. Some see it in a leg of mutton, others in a compound fracture; and to expect others to accept one's own definition of it is as absurd as to expect all humanity to use the same toilet-brush.

You can't do a fine thing without having seen fine examples.

Believe that time is going to help you do what you want.