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真正的理解来自于发现看似无关概念之间的联系。
True understanding comes from seeing connections between seemingly unrelated ideas.
The more you give, the more they take.
礼貌,并不需要花钱。用完马桶后,把马桶盖放下;上电梯时,耐心等别人出来再进去;把购物车放回指定区域;在借东西时,归还时要东西的状态要比你借的时候还要好(例如给车加满油、把物品清理干净)。
All life comes from an egg.
Mathematics is not a spectator sport. You have to do it to understand it.