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Old minds are like old horses; you must exercise them if you wish to keep them in working order.
人生最幸福的事,就是做自己喜欢做的事。
A mathematician's work is mostly a solitary pursuit, but it is also deeply collaborative.
成功的方法是加倍你的失败率。
最伟大的发明是那些最直接满足人类需求的发明。