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。
The human being is a most curious creature. He thinks he has got one soul, and he has got dozens.