You must change nothing in your writing without absolute necessity. If it is necessary， then change with simplicity.

过去是一张地图，显示我们曾去过哪里。

Collaboration across borders and disciplines is the future of healthcare.

像所有的成人一样，幼儿也有他独立的人格。

"We are all, in some way, prisoners of our time."

对知识的投资总是能带来最大的利益。学习是好学的人，财富是细心的人。如果一个人把钱包倒进他的头里，没有人能把它从他身边夺走。

To be free is not merely to cast off one's chains, but to live in a way that respects and enhances the freedom of others.

The dead speak through us, in our dreams, in our words.

快乐就是能够不带恐惧地意识到自己。

成功是一段旅程，而不是终点。不断学习，不断成长。