To such an extent does nature delight and abound in variety that among her trees there is not one plant to be found which is exactly like another; and not only among the plants, but among the boughs, the leaves and the fruits, you will not find one which is exactly similar to another.
Leonardo da VinciThe body of the earth is of the nature of a fish... because it draws water as its breath instead of air.
Leonardo da VinciIt's not enough that you believe what you see. You must also understand what you see.
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