"Curiosities of Civilization" is a compilation of essays that explore the oddities and peculiarities of human civilization. The book covers a wide range of topics, including the history of dueling, the role of women in ancient societies, the origins of superstitions, and the impact of technological advancements on human behavior. St. John uses a blend of historical anecdotes, cultural analysis, and personal observations to shed light on the less-discussed aspects of human progress.