主语部分使用最高级形容词 most terrible 修饰 enemy，表语部分用名词短语 lack of firm conviction 强调核心问题。
Time is gold when seized, but flows away like water if neglected. — Proverb
Though an old horse lies by the trough, its ambition remains for a thousand miles; a hero in his twilight years does not let his noble spirit wane. — Cao Cao
Unity is strength. — Mao Zedong
Do not do to others what you would not have them do to you.
Time is my property, and time is my field. — Goethe
The most terrible enemy is the lack of firm conviction.
Bear a moment's anger to avoid a hundred days of worry.
Poverty coupled with laziness is true poverty; lowliness coupled with lack of ambition is true lowliness. — Rodin
Life is short, and therefore it should be woven into the glorious history of human civilization to achieve eternity. Precisely because life is short, we must cherish every moment of youth even more, allowing it to emit the greatest light and heat within its limited span.
It is better to die bravely in battle than to live a sordid,苟且 existence.
If you wish to appreciate your own value, you must create value for the world. — Goethe
Reviewing the old leads to new understanding. — Confucius, The Analects, Wei Zheng. Translation: Reviewing old knowledge yields new insights and realizations. Within your capacity, read widely and think deeply about the meanings. Regularly review knowledge you have already heard to gain new insights and understanding.
Do not do to others what you would not have them do to you. — The Analects
Every person should have the ambition and fighting spirit of a hero of their generation! One should be a pioneer for a new era. — Zhou Enlai
Knowing shame is close to bravery. — The Doctrine of the Mean
时间抓起来说是金子，抓不住就是流水。——谚语
老骥伏枥，志在千里；烈士暮年，壮心不已。——曹操
团结就是力量。——毛泽东
己所不欲，勿施于人。
时间是我的财产，我的田亩是时间。——歌德
最可怕的敌人，就是没有坚强的信念。
忍一时之气，免百日之忧。
贫而懒惰乃真穷，贱而无志乃真贱。——罗丹
生命惟因其短，故应把它化入人类最壮丽的文明史中以获得永恒；生命也唯因其短，更要加倍珍惜每刻青春，使它在有限的生命线段内尽可能发出最大的光和热。
与其苟且偷生，毋宁英勇战死。
你若要喜爱你自己的价值，你就得给世界创造价值。——歌德
温故而知新。——春秋孔子《论语·为政》。白话译文：温习旧知识从而得知新的理解与体会。在能力范围以内，尽量广泛阅览典籍，反复思考其中的涵义，对已经听闻的知识，也要定期复习，能有心得、有领悟。
己所不欲，勿施于人。——《论语》
每一个人要有做一代豪杰的雄心斗志！应当做个开创一代的人。——周恩来
知耻近乎勇。——《中庸》