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今天很残酷,明天更残酷,后天很美好,但绝对大部分是死在明天晚上,所以每个人不要放弃今天。
When we think of the past it's the beautiful things we pick out. We want to believe it was all like that.
数学不仅仅是一种工具;它是一种思维方式。
激励措施的微小变化可以导致行为的巨大变化。
Man's freedom is his limitation.
If you’re not moving forward, you’re falling behind.