diligence is the key to success. it means persisting in one's work. it does not mean exerting ourselves all day and all night without rest, food and sleep. the true meaning of diligence is to use time carefully for the purpose of improvement, or to work persistently without wasting time.

　　iaziness makes us useless. if we do not study and work hard we shall not be able to earn a living in our community. there will be nothing we can do just because we have failed to learn anything by letting the time pass unused.

　　an english proverb says, "lost time is never found again." time is precious and is one of those many things that cannot be purchased with money. therefore, we must make good use of our time and study hard when we am young. lazy hands make a man poor, while diligent hands bring wealth.