1、Knowledge advances by steps and not by leaps.
2、Patience is bitter, but its fruit is sweet.
3、To save time is to lengthen life.
4、Experience keeps a dear school,but fools learn in no other.
5、We cannot always build the future for our youth , but we can build our youth for the future.
6、Never deter till tomorrow that which you can do today.
7、知识只能循序渐进，不能跃进。
9、Our destiny offers not the cup of despair , but the chalice of opportunity.
10、Man errs so long as he strives.
11、
12、I have nothing to offer but blood , toil tears and sweat.
13、The man who has made up his mind to win will never say “impossible ”.
14、Progress is the activity of today and the assurance of tomorrow.
15、Genius only means hard-working all one's life.
16、One today is worth two tomorrows.
17、Take time when time comes lest time steal away.
