3、 nǔ lì huò xǔ wú fǎ chāo yuè bié rén ， kě bù nǔ lì ， yǒng yuǎn wú fǎ yù jiàn gèng hǎo de zì jǐ 。

In Chapter 3, after a couple of introductory chapters, one on the goal of the book and the other on patterns, Kent describes two cross-cutting concerns in programming: values and principles., ...