“It is impossible to be a mathematician without being a poet in soul.” —Sofia Kovalevskaya, Recollections of Childhood, 1895  From the ingenious author of The Math Book and The Physics Book comes an inspirational volume that celebrates the beauty and wisdom of mathematics. Every page of this yearlong devotional presents a sage remark alongside a stunning image relating to the world of math. The quotes offer insight from such brilliant thinkers as Pythagoras, Richard Feynman, and Robert Heinlein, and the art showcases everything from gorgeous fractals to splendid architecture. The calendar also includes the birthdays of notable mathematicians, so readers can see which ones share theirs. A brief biographical dictionary provides additional information on the people whose wonderful words appeared through the book.