可持续性不再是一种选择;而是我们都必须承担的责任。
广义相对论已经通过了我们所有的测试,甚至在超大质量黑洞附近也是如此。
I work hard, and I do good, and I'm going to enjoy myself. I'm not going to let you restrict me.
The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.
Train people well enough so they can leave, treat them well enough so they don't want to.