The function of muscle is to pull and not to push, except in the case of the genitals and the tongue.
Leonardo da VinciI abhor the supreme folly of those who blame the disciples of nature in defiance of those masters who were themselves her pupils
Leonardo da VinciMen wrongly lament the flight of time, blaming it for being too swift; they do not perceive that its passage is sufficiently long, but a good memory, which nature has given to us, causes things long past to seem present.
Leonardo da Vinci