Dedication and Happiness demonstrates that the argument of "happiness" is clear and vivid. The eighth paragraph discusses the importance of "happiness", which is the second layer of the second part. In the eighth paragraph, the author analyzes the cases of "hard work" often encountered in life, and explains that to "find happiness from labor", it is natural to find "happiness" from "happy work".

Next, let's further discuss the truth of "happiness" and explain that "all occupations are interesting" with four points. This is the author's experience, which is convincing.

Then he quoted two famous sayings of Confucius to further prove that "life can experience pleasure from one's own career" (that is, enjoy work) and "life is valuable".