If we knew in advance the outcome of our decisions and actions, we'd all be saints, but as it is not so, we must fall, hit our head and become wise through the wrong decisions.
如果我们提前知道决定和行动会产生的结果，我们就都是圣人了。但既然我们不是，我们一定会跌倒，磕着自己的脑袋，通过做错误的决定来变得聪明。
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