16. Keep your mouth shut when you have nothing neccessary to say
17. Always work all the way through
18. "There are four things you must do in order to become a man: plant a tree, fight a bull, write a novel and father a son." - Ernest Hemingway. I suppose most of them are hard to do, but would they really help? I suppose planting a tree shows care for the world, fighting a bull shows courage and strength, writing a novel shows strength of mind and imagination, and fathering a son shows responsibility, but fighting a bull would be a long process to get ready for, a lot of training... probably easier ways.