我们不能总是选择我们所面临的问题，但我们总是能够选择对问题的回应。
We cannot always assure the future of our friends, but we have a better chance of assuring our future if we remember who our friends are.
Pure mathematics is, in its way, the poetry of logical ideas.
Numbing the pain for a while will make it worse when you finally feel it.
应对不自由世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。
安全不仅仅是一项政策，它是一种从高层开始的文化。