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To wear your heart on your sleeve isn't a very good plan; you should wear it inside, where it functions best.
The only thing we can know is that we know nothing and that is the highest flight of human wisdom.
"Love is scary: it changes; it can go away. That's the part of the risk."
技术可以放大优秀教学的效果,但无法替代糟糕的教学。