Provoke the unexpected. Expect it.

The crude real will not by itself yield truth.

Cinema, radio, television, magazines are a school of inattention: people look without seeing, listen in without hearing.

Model. Two mobile eyes in a mobile head, itself on a mobile body.

Be the first to see what you see as you see it.

The ear is profound, whereas the eye is frivolous, too easily satisfied. The ear is active, imaginative, whereas the eye is passive. When you hear a noise at night, instantly you imagine its cause. The sound of a train whistle conjures up the whole station. The eye can perceive only what is presented to it.

Ten properties of an object, according to Leonardo: light and dark, color and substance, form and position, distance and nearness, movement and stillness.