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The world is full of doors, and every door is a choice.

Happiness can be found even in the darkest of times, if one only remembers to turn on the light.

采礦業的創新不僅僅是技術，更是思維方式的改變。

Machinery and labor-saving devices are only valuable as they serve to reduce the cost of manufacture.

我明白失敗只是過程的一部分，你不能讓它定義你。