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Sustainability is the future of quarrying, and we must act now.

"Love is not always about holding on; sometimes, it's about letting go."

The habit of committing far more time to learning and thinking than to doing is no accident.

Law is a system of rules that are enforced through social institutions to govern behavior.

The only way to change behavior is through manipulation of reinforcement contingencies.

最好的決策來自于多聽少說。

人之所以比禽獸尊貴，是因為人懂得“禮”啊。后人常用這句話說明“禮”在我們生活中的重要性。講究“禮”，是有修養、有道德的表現。