柠檬问题是指买家无法确定产品质量,因此只愿意支付反映平均质量的价格。
不能以牺牲他人自由为代价来获得持久和平。
你必须愿意比任何人都更努力。
"Reading is not just about learning; it's about discovering who you are."
The process of discovery in mathematics is often more important than the result itself.
国君自以为神圣聪明,而不去咨询官吏,自以为国家安定强大,而不注重防守,周围的邻国图谋侵略他却不知道戒备。