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在采礦作業中，安全必須始終放在第一位。

The best leaders are those who listen more than they speak.

I'm always looking for ways to improve, even when I'm at the top.

Conflict is the gadfly of thought. It stirs us to observation and memory. It instigates to invention. It shocks us out of sheeplike passivity, and sets us at noting and contriving.

書是對抗遺忘的武器。