1. If you wish to succeed, you should usepersistence as your good friend, experience asyour reference, prudence as your brother andhope as your sentry.
　　——Thomas Edison, Amerian inventor
　　
　　如果你希望成功，当以恒心为良友、以经验为参谋、以谨慎为兄弟、以希望为哨兵。——美国发明家爱迪生