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We don't inherit the earth from our ancestors; we borrow it from our children—this belief shapes everything we do.
The poor perpetually sell their time cheaply, yet can never buy it back.
没有承诺,你永远不会开始,但更重要的是,没有坚持,你永远不会完成。
一个社会的竞争优势不是来自学校把乘法和元素周期表教得多么好,而是来自他们激发学生想象力和创造力的程度。