Fukagawa Hidetoshi is a retired high-school teacher in Japan, and one of the world's experts on sangaku. He is the coauthor of Japanese Temple Geometry Problems. Tony Rothman is a theoretical cosmologist who lectures in physics at Princeton University. His books include Everything's Relative and Other Fables from Science and Technology.

"The Fukagawa-Rothman collaboration on Sacred Mathematics: Japanese Temple Geometry makes this book much more than an anecdotal or exotic cultural artifact. It is an original, dynamic tool for all interested in mathematics and in a better understanding of Japanese cultural life under the Tokugawa shogunate. It challenges our modern educational methods and is well worth having in a library or in the classroom."---Jean Constant, Mathematical Intelligencer --- "A unique book in every respect. Sacred Mathematics demonstrates how mathematical thinking can vary by culture yet transcend cultural and geographic boundaries." --- "This is a marvelous book. Good books are not just written or compiled, they are crafted. Sacred Mathematics is a well crafted work that combines mathematics, history and cultural considerations into an intriguing narrative. . . . The writing style is appealing and the organization of material excellent. Princeton University Press must be congratulated on producing this quality publication and offering it at an agreeable price. This book is highly recommended for personal reading and library acquisition. It should be especially appealing to problem solvers."---Frank J. Swetz, Convergence --- "The difficult problems with complete solutions and rich commentary that comprise the heart of this book will interest every mathematics student." --- "This book is the most thorough (and beautiful) account of Japanese temple geometry (sangaku) available."---Paul J. Campbell, Mathematics Magazine --- "Fascinating and beautiful book." --- "Now Fukagawa Hidetoshi, a mathematics teacher, and writer Tony Rothman present a collection of Sangaku problems in their book, Sacred Mathematics. The puzzles range from simple algebra within the grasp of any intermediate-school student, to challenging problems that require graduate-school mathematics to solve. Copious illustrations and many detailed solutions show the scope, complexity, and beauty of what was tackled in Japan during the Tokugawa shogunate."---Peter J. Lu, Nature --- "Winner of the 2008 PROSE Award in Mathematics, Association of American Publishers"