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The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
To understand the mind, we must first understand its evolutionary purpose.
置身于是非之外,评断是非才能客观;置身于利害之外,才能看清利害的变化。
成功不是关于金钱或名声,而是对你所做的事情感到快乐。