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If you're going to try, go all the way. Otherwise, don't even start.
挑战在于用最少的东西表达最多的内容。
对冲低油价的最佳方法是降低盈亏平衡成本。
一个人最危险的敌人是他自己的口舌。
The essence of mathematics is not just in solving problems but in asking the right questions.