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数学直觉就像肌肉一样 - 通过锻炼会变得更强大。
One of the advantages of being old is that you can speak your mind without worrying about the consequences.
It's on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.
艺术家的地位是卑微的。他本质上是一个渠道。