大型工业企业是美国经济中最强大的机构，其管理者是最具影响力的经济决策群体。

Can a man still be brave if he’s afraid. That is the only time a man can be brave.

Life is just a series of trying to make up your mind.

The beauty of mathematics is that it allows us to abstract away the complexities of the real world and focus on the underlying principles.

In mathematics, as in life, the most profound discoveries often come from asking the simplest questions.

用歌声温暖每个需要安慰的心。

You can't do it all yourself. Don't be afraid to lean on others.

办事果断的人看起来好像忙碌，其实心中常有闲暇。因循苟且的人看起来闲暇，其实心中常有牵念。