The lie is so vile, that even if it were in speaking well of godly things, it would take off something from God's grace; and Truth is so excellent, that if it praises but small things they become noble.
Leonardo da VinciIf a man has a tent made of linen of which the apertures have all been stopped up, and be it twelve bracchia across (over twenty-five feet) and twelve in depth, he will be able to throw himself down from any height without sustaining injury. [His concept of the parachute.]
Leonardo da VinciYou don't get into trouble because of the things you don't know. It is the things you don't know you don't know that really get you into a mess.
Leonardo da Vinci