To be prepared for war is one of the most effective means of preserving peace.
自己不能胜任的事，切勿轻易答应别人;既经允诺，就必须实践自己的诺言。
任何一个保持爱美之心的人都不会变老。
The history of a nation is, in essence, the history of its ruling class.
比喻企业需要长期积累才能迎来爆发式增长
记忆是一种责任，而不是负担。
我就像一条狗，不会说话但我懂。
The true teacher defends his pupils against his own personal influence. He inspires self-trust. He guides their eyes from himself to the spirit that quickens him. He will have no disciple.