法治是现代国家发展的必要条件。

When people are faced with a problem, they often think in terms of past experiences rather than looking at the actual structure of the problem.

The mind evolves to meet the challenges of existence.

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。