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You think you know when you can learn, are more sure when you can write, even more when you can teach, but certain when you can program.

理解一個國家的首要條件是去聞聞它的氣味。

劍鞘保護劍的鋒利，自己卻滿足於它自己的遲鈍。

The moment one gives close attention to anything, even a blade of grass, it becomes a mysterious, awesome, indescribably magnificent world in itself.