The only limits that exist are the ones you place on yourself.
唯一存在的限制是你给自己设定的限制。
劳动力市场在不断演变,我们的模型应反映这一点。
The greatest journeys are those that change us.
The best science fiction is not about the future; it's about the present.
一本好书是一个永远不会离开你的朋友。