我们所认识的最美丽的人是那些经历过失败、痛苦、挣扎、失落，并找到了走出深渊之路的人。

创新不仅仅是创造新事物，更是改进已有的事物。

政治没有永恒的朋友，只有永恒的利益。

I went to the woods because I wanted to live deliberately. I wanted to live deep and suck out all the marrow of life. To put to rout all that was not life. And not, when I had come to die, discover that I had not lived.