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To be free is not to have no master, but to choose your own.
The joy of mathematics is in the struggle to understand.
人生而自由,却无处不在地受着枷锁。
有真才能的人不依恃才能,有真学问的人不夸耀学问。
A leader’s legacy is measured by the success of those they’ve mentored.
The greatest weapon against stress is our ability to choose one thought over another.