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

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.

I hold that the perfection of form and beauty is contained in the sum of all men.

Simplicity is the greatest adornment of art.

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. . .

Sight is the noblest sense of man.

Love and delight are better teachers than compulsion.