解释：依据自己的能力去做事，把握最佳时机采取行动。

The development of formal systems has revolutionized our understanding of mathematics.

国家是人类社会中最重要的机构，因为它是唯一可以合法使用武力来维持秩序的机构。

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

我不需要别人的认可来做自己。

Without ecological balance, there is no real economic benefit.