林肯的政敌批评林肯有“两面三刀”时的幽默回应。因为就政治人物而言，林肯的长相极不讨喜，像个野猴

数学的快乐来自于为理解而奋斗。

"A book is a treasure that never loses its value."

The next generation of scientists will solve problems we can’t even imagine today.

一个好的工程师是能把挫折转化为灵感的人。

"Writing is a way to make sense of our experiences."

We've been through so much together, and that's what makes us strong.