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The beauty of a mathematical idea is that it can be shared and understood across cultures and time.
Sustainability is not just a trend, it's a responsibility we owe to future generations.
世人常因冀望遥远难及的幸福,忽略了眼前的小乐趣。
天下没有几百年不出现弊端的制度,也没有永远不变的法律。
Reason is, and ought only to be the slave of the passions, and can never pretend to any other office than to serve and obey them.