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世界上真正的悲剧不是正确与错误之间的冲突,而是两种正确之间的冲突。
The only person you should try to be better than is the person you were yesterday.
面包是最简单的食物形式,却蕴含着最复杂的工艺。
In mathematics, as in life, the most elegant solutions often arise from a deep understanding of the problem.