The streets were dark with something more than night.
"I'm like a kid. I never think about the consequences."
有人告诉我在我书中每个方程式将会降低一半的销售量。结果,我确实放了一个方程式——爱因斯坦著名的等式,E=mc2。我发现这并没有吓跑我一半的潜在读者。
I have always considered that the true test of a machine is its practical utility in the hands of the common laborer.