The Secrets of Nostradamus by David Ovason (2002, Paperback, Reprint)

His name has become a synonym for clairvoyance: Nostradamus, astrologer to the king of France, the most famous seer in Western history. But the real meaning of his prophecies has gone undetected, hidden in a secret alchemical code. Known as the Green Language, it was understood by only a handful of medieval occult scholars, and has been lost for centuries -- until now.

David Ovason spent 40 years working on the Green Language, enabling him to finally crack the secret code of Nostradamus. In this book, he reveals with line-by-line analysis the hidden writings of the great astrologer, showing that his dates and details are more exact than any previous scholars have realized. As a master of the arcane astrological traditions practiced by Nostradamus, Ovason provides the most accurate and insightful account ever written of this mysterious figure's writings, predictions, and life.