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数学的真正力量在于它简化复杂事物的能力,使不可理解的事物变得可理解。
Memory is identity... You are what you have done; what you have done is in your memory; what you remember defines who you are.
To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.
水和空气,所有生命赖以生存的两种基本流体,已经变成了全球的垃圾箱。