I have from an early age abjured the use of meat, and the time will come when men such as I will look upon the murder of animals as they now look upon the murder of men.
Leonardo da VinciA bird is an instrument working according to mathematical law, which instrument it is within the capacity of man to reproduce with all its movements.
Leonardo da VinciThe poet ranks far below the painter in the representation of visible things, and far below the musician in that of invisible things.
Leonardo da Vinci