The boundary between physics and mathematics is not as clear-cut as one might think.

我不会让消极情绪击垮我。

选自汉·桓宽《盐铁论·诏圣》。目，网眼。不可，不能。法律制度太粗疏难以治国，就像网眼太少的渔网往往网不到鱼一样。这句话以比喻之法说明立法要周全、精细，不能失之粗疏，否则不易于执法者依法操作。而不能操作，执法者就有了太大的自由度，这就等于没有法律了。

We've had three big ideas at Amazon that we've stuck with for 18 years, and they're the reason we're successful: Put the customer first. Invent. And be patient.

People are not lazy. They simply have impotent goals - that is, goals that do not inspire them.

对付一个不自由的世界的唯一方法，就是变得如此绝对自由，以至于你的存在本身就是一种反抗。

It's not the writer's job to tell you how to feel. It's the writer's job to tell you something and make you feel it.