A proof tells us where to concentrate our doubts.

I've been waiting more than 30 years to say this: "Dad, I always told you I'd come back and get my degree." I want to thank Harvard for this timely honor. I'll be changing my job next year…and it will be nice to finally have a college degree on my resume.

The universe is full of magical things patiently waiting for our wits to grow sharper.

写作不仅仅是一种职业，更是一种生活方式。

虚弱者通过厚颜无耻变得强大，强者通过妥协变得强大。