The discussion focuses on identifying the top 20 mathematics books suitable for laypeople, emphasizing readability and enlightenment over classical texts. Participants suggest a variety of titles, including "What is Mathematics?" by Courant and Robbins and "A Mathematician's Apology" by G.H. Hardy, while clarifying that textbooks are also acceptable. Recommendations include historical perspectives on math, such as "A History of Pi" by Beckmann and "An Imaginary Tale" by Nahin, which blend math with engaging narratives. The conversation highlights the importance of accessibility in mathematics literature for a general audience. Overall, the thread serves as a resource for those seeking to explore mathematics in an enjoyable and comprehensible way.