計(jì)算理論為理解什么可以計(jì)算、什么不能計(jì)算提供了基礎(chǔ)。
I got the idea to start Amazon 16 years ago. I came across the fact that Web usage was growing at 2，300 percent per year. I'd never seen or heard of anything that grew that fast， and the idea of building an online bookstore with millions of titles -- something that simply couldn't exist in the physical world -- was very exciting to me. I had just turned 30 years old， and I'd been married for a year. I told my wife MacKenzie that I wanted to quit my job and go do this crazy thing that probably wouldn't work since most startups don't， and I wasn't sure what would happen after that. MacKenzie (also a Princeton grad and sitting here in the second row) told me I should go for it. As a young boy， I'd been a garage inventor. I'd invented an automatic gate closer out of cement-filled tires， a solar cooker that didn't work very well out of an umbrella and tinfoil， baking-pan alarms to entrap my siblings. I'd always wanted to be an inventor， and she wanted me to follow my passion.
自由并非存在于對(duì)自然法則的夢(mèng)幻般的獨(dú)立之中，而是存在于對(duì)這些法則的認(rèn)知中，以及由此產(chǎn)生的有系統(tǒng)地使它們朝著明確目標(biāo)發(fā)展的可能性中。
The tragedy of great power politics is that it leads to conflict and war.