"The most dangerous phrase in business is 'We've always done it this way.'"

文学是社会的镜子，反映其美德与恶习，希望与恐惧。

Learning is not a passive process; it involves the active construction of knowledge.

"The key to success is to focus on goals, not obstacles."

在学习结束时，我们知道物理学的所有过去，但对现在和未来一无所知。