Leonardo da Vincis (14521519) sketches and notes allow us to peer into the mind of a genius. A man of unquenchable curiosity spanning an infinite spectrum, he was fascinated by the grace and geometric Structure of the universe. Paperblanks Sun & moonlight 2020 12-month diary features da Vincis observations on the light of the moon relative to the radiance of the sun, as recorded in the Codex Leicester.