21. What is the test of a civilization based on liberty? How is this true of the American college?

21. 对建立在自由基础上的文明的考验是什么？美国大学怎么会这样？

In 1859, Mill wrote a famous book on liberty, the main point of which was the importance of defending individual rights and minority rights.

1859年穆勒写了本关于自由的名著，书里的主要观点是，争取个体和少数群体权利十分重要。