And since geometry is the right foundation of all painting, I have decided to teach its rudiments and principles to all youngsters eager for art. . .

Simplicity is the greatest adornment of art.

Help us to recognize your voice, help us not to be allured by the madness of the world, so that we may never fall away from you, O Lord Jesus Christ.

Sight is the noblest sense of man.

An artist of understanding and experience can show more of his great power and art in small things roughly and rudely done, than many another in a great work. A man may often draw something with his pen on a half sheet of paper in one day . . . . and it shall be fuller of art and better than another's great work whereon he hath spent a whole year's careful labor.

Sane judgment abhors nothing so much as a picture perpetrated with no technical knowledge, although with plenty of care and diligence.

What beauty is, I know not, though it adheres to many things.