人生就是走自己选择的路。

I must study politics and war that my sons may have liberty to study mathematics and philosophy.

写作是让不可见的东西变得可见。

On morals: "The one thing that offends me the most is when I walk by a bank and see ads trying to convince people to take out second mortgages on their home so they can go on vacation. That's approaching evil."

你必须愿意走出舒适区才能成长。