过去总是紧张的，未来是完美的。

The anarchic nature of the international system forces states to compete for power.

文学是作者和读者之间不断的对话。

采石业的创新不仅关乎机械，还关乎远见和可持续性。

写作是一种自由的行为，一种逃避强加给我们的枷锁的方式。

Don't watch the clock; do what it does. Keep going.

The sustainable development of the coal industry requires the coordinated efforts of policy, technology, and the market.

【解释】人常常在忧患困苦中，才能磨练意志，增长才干。