Opening another drawer in his Cabinet of Curiosities, renowned mathematics professor Ian Stewart presents a new medley of games, paradoxes, and riddles in Profe

From bestselling author and provocateur Christopher Hitchens, the classic guide to the art of principled dissent and disagreement In Letters to a Young Contrari

In 1859 Bernhard Riemann, a shy German mathematician, gave an answer to a problem that had long puzzled mathematicians. Although he couldn't provide a proof, Ri

The true story of eighteenth-century mathematician Sophie Germain, who solved the unsolvable to achieve her dream. When her parents took away her candles to kee

An expansive collection of love letters to books, libraries, and reading, from a wonderfully eclectic array of thinkers and creators.