Henri Poincaré was a mathematical genius who wrote “Science and Hypothesis” in 1902. The book was unique because it was written for non-experts and covered various topics such as biology, physics, mathematics, and space. The central thesis of the book is that scientific thinking does not always lead to absolute truth. Rather, many scientific beliefs are mere conventions instead of rational explanations. The book’s chapters delve into topics such as mathematical reasoning, non-Euclidean geometries, and the relationship between space and geometry. This vintage text has become increasingly rare and pricey, but fortunately, it has been republished in an affordable, high-quality edition. It even includes a specially commissioned biography of the brilliant author.