Tim Duncan announced his retirement on Monday after a sensational 19-year run with the Spurs. If Duncan is looking to explore a post-NBA career in psychology, he can always bring up that he’s a published author.

Duncan earned his undergraduate degree in psychology from Wake Forest. In 1995, professor Mark Leary sought help from two students to co-write a chapter of his book. A young Timothy (!) Duncan was one of those students.

The full chapter can be read here, and it’s amazingly entitled: “Blowhards, Snobs and Narcissists: Interpersonal Reactions to Excessive Egotism.”

I gave the chapter a read and now know everything there is to know about egotism.

In an interview with the Wall Street Journal, Leary recalled Duncan’s turning point as a psychology student in his class:

“He’d answer questions only when I asked him directly, but he didn’t volunteer much on his own,” Leary said. “But then, about the third or fourth week, we were having this free-wheeling, intellectual conversation, and suddenly he stopped while he was talking and looked surprised. He said: ‘Man, this is kind of fun, isn’t it?’” They saw Duncan from that day on like most people never see him. He was only a junior in college, but he was as involved as anyone with the research. He contributed ideas and sentences that made it into the final version of the chapter verbatim. He made jokes—and some of them were even funny.

When the book came out in 1997, Leary had to go through NCAA compliance in an attempt give the NBA-bound Duncan a copy. Duncan didn’t see the book until years later when a McDaniel College psychologist asked him to sign the book before a game in Charlotte.