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道德的目的是教你,不是受苦和死亡,而是享受自己和生活。
最好的领导者是那些倾听多于说话的人。
A great biography should be like a portrait that captures both the light and the shadow.
In mathematics, you don't understand things. You just get used to them.
快乐的人,只有快乐的人,是能把今天称为自己所有的那个人。
The changes in our life must come from the impossibility to live otherwise than according to the demands of our conscience.