Prefer what intuition whispers in your ear to what you have done and redone ten times in your head.
The faculty of using my resources well diminishes when their number grows.
Model. Two mobile eyes in a mobile head, itself on a mobile body.
Ten properties of an object, according to Leonardo: light and dark, color and substance, form and position, distance and nearness, movement and stillness.
Make visible what, without you, might perhaps never have been seen.
The point is not to direct someone, but to direct oneself.