A true tale of mathematics, mysticism, and the quest to understand the universe

A portrait of the great seventeenth-century philosopher and mathematician looks at the contributions of Ren Descartes, his interest in mysticism and probable membership in the occult brotherhood of Rosicrucians, and his secret notebook, which he kept in code, attempting to redecipher the contents of the long-lost volume. Reprint. 35,000 first printing.