Love & Sleep by John Crowley

In Love & Sleep, the second volume of the series, the professor Pierce Moffett finds himself at a great turning point in the history of the world. As a child, Pierce was no stranger to magic, but those revelations faded with time. Now Pierce's search for a secret history of the world―one in which magic works and angels speak to humankind―has begun again. Love & Sleep is followed by the third volume in the Agypt cycle, Damonomania, and the fourth, Endless Things.