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Wisdom comes to us when it can no longer do any good.
智慧总是在它不再有任何用处时才降临到我们身上。
The only way to learn mathematics is to do mathematics.
唯一能拯救我们的是真相。真相是唯一能让我们自由的东西。
Organic farming is not a step back, but a leap forward in quality and responsibility.
唯一的失败就是不去尝试。