Someone told me that each equation I included in the book would halve the sales. In the end， however， I did put in one equation， Einstein’s famous equation， E = mcI hope that this will not scare off half of my potential readers.
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。
A man's character is his fate.
写作是一种自由的形式。
Sustainability isn't a choice anymore—it's a responsibility we owe to future generations.
Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.
学无止境的人比无所不知的人做得更好。
解释：大部分鸟类都是雄性的，而雌鸽却是雌性的，说明了鸟类性别的特殊性。