The light and heat of the universe comes from the sun, and its cold and darkness from the withdrawal of the sun.
Leonardo da VinciThe earth is moved from its position by the weight of a tiny bird resting upon it.
Leonardo da VinciMusic cannot be called otherwise than the sister of painting, for she is dependent upon hearing, a sense second to sight, and her harmony is composed of the union of its proportional parts sounded simultaneously, rising and falling in one or more harmonic rhythms.
Leonardo da Vinci