在商业中，你要么适应，要么变得无关紧要。钢铁行业也不例外。

广义相对论在某种意义上就是引力场的理论。

Every day confirms his belief of the inconsistency of all human characters, and of the little dependence that can be placed on the appearance of merit or sense.

自由的功用就是解放他人。