每当一座煤电厂关闭，美国的一部分心脏也随之关闭。

The beauty of life lies in its unpredictability.

"The future is a concept—it exists only in our minds."

"Approximation algorithms are a testament to the power of compromise in achieving practical solutions."

"The stars are the street lights of eternity."

对地球最大的威胁是认为别人会拯救它的想法。

Life is composed of lights and shadows,and we would be untruthful,insincere,and saccharine if we tried to pretend there were no shadows.

人类最伟大的追求是了解自己必须做什么才能成为一个人。