28. Every hour of lost time is a chance of future misfortune.

一寸光阴一寸金，寸金难买寸光阴。

 

29、If you would hit the mark, you must aim a little above it. Every arrow that flies feels the attraction of earth. －Henry Wadsworth Longfellow.

　　要想射中靶，必须瞄准比靶略为高些，因为脱弦之箭都受到地心引力的影响。

 

30、If you wish to succeed, you should use persistence as your good friend, experience as your reference, prudence as your brother and hope as your sentry.

　　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