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一个命题的证明是一种性质使得我们相信该命题的过程。
A proof of a proposition is a process the nature of which is such as to produce in us a belief in that proposition.
心灵是自己的地方,它本身可以把地狱变成天堂,把天堂变成地狱。
My children taught me that love has no limits.