The Age of Unreason

:"This article is about the science fiction series;The Age of Unreason (ISBN 0-09-954831-3) is also the title of a book by Charles Handy."

"The Age of Unreason" is a series of four novels written by Gregory Keyes:
* "Newton's Cannon" (1998), ISBN 1-56865-829-X
* "A Calculus of Angels" (1999), ISBN 0-7394-0260-9
* "Empire of Unreason" (2000), ISBN 0-345-40609-5
* "The Shadows of God" (2001), ISBN 0-345-43904-X

The story spans the late seventeenth and early eighteenth century. The author makes use of pseudosciences (scientific alchemy instead of our physics) that were popular at the time: using affinity and aether, for example. Some historical characters appear: Isaac Newton, Louis XIV of France, Benjamin Franklin, Peter the Great of Russia and Blackbeard have important roles in various volumes. Action moves between England and France, later involving Russia, Austria and the American Colonies.