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Reality is always the starting point.
The best way to learn mathematics is to do mathematics.
In the short run, the market is a voting machine but in the long run, it is a weighing machine.
孔子说:“对品德不进行培养,对学问不进行钻研,听到好人好事不能跟着做,有了错误不能及时改正,这就是我所担忧的。”
你不能因为自己的错误而对别人发火。