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Virtue is more to be feared than vice， because its excesses are not subject to the regulation of conscience.

A mathematician's intuition is as important as rigorous proof.

關(guān)鍵是在事情順利時(shí)不要太高調(diào)，在事情不順時(shí)不要太低落。

Innovation in natural gas extraction is essential for meeting the world's growing energy demands.

有明確身份認(rèn)同的人知道他們是誰(shuí)以及他們代表什么。他們有強(qiáng)烈的自我意識(shí)，不容易被他人左右。