The function of muscle is to pull and not to push, except in the case of the genitals and the tongue. – Leonardo DaVinci
Every now and then go away, have a little relaxation, for when you come back to your work your judgment will be surer. Go some distance away because then the work appears smaller and more of it can be taken in at a glance and a lack of harmony and proportion is more readily seen. – Leonardo DaVinci
As a well spent day brings happy sleep, so life well used brings happy death. – Leonardo DaVinci
You do ill if you praise, but worse if you censure, what you do not understand. – Leonardo DaVinci
Man, so far as natural science by itself is able to teach us, is no longer the final cause of the universe, the Heaven-descended heir of all the ages. His very existence is an accident, his story a brief and transitory episode in the life of one of the meanest of the planets. – Arthur Balfour