O Time! consumer of all things; O envious age! thou dost destroy all things and devour all things with the relentless teeth of years, little by little in a slow death. Helen, when she looked in her mirror, seeing the withered wrinkles made in her face by old age, wept and wondered why she had twice been carried away.
Leonardo da VinciAnyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.
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 VinciExperience does not err. Only your judgments err by expecting from her what is not in her power.
Leonardo da Vinci