Thirst will parch your tongue and your body will waste through lack of sleep ere you can describe in words that which painting instantly sets before the eye.
Leonardo da VinciIt vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.
Leonardo da VinciSmall rooms or dwellings set the mind in the right path, large ones cause it to go astray.
Leonardo da VinciIf you throw a stone in a pond... the waves which strike against the shores are thrown back towards the spot where the stone struck; and on meeting other waves they never intercept each other's course... In a small pond one and the same stroke gives birth to many motions of advance and recoil.
Leonardo da Vinci