You must grow in patience when you meet with great wrongs, and they will then be powerless to vex your mind.
Leonardo da VinciExperience never misleads; what you are misled by is only your judgment, and this misleads you by anticipating results from experience of a kind that is not produced by your experiments.
Leonardo da VinciAnd you who wish to represent by words the form of man and all the aspects of his membrification, relinquish that idea. For the more minutely you describe the more you will confine the mind of the reader, and the more you will keep him from the knowledge of the thing described. And so it is necessary to draw and to describe.
Leonardo da Vinci