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Mathematics is not just a human invention; it has a deep reality that exists independently of us.
数学不仅仅是人类的发明;它具有一种独立于我们而存在的深刻现实。
"You can't go back and change the beginning, but you can start where you are and change the ending."
解释:犯了错误能够改正的人,是百姓中的上等人。