Le Miroir de Merlin

"Here is Merlin, half star-born, gifted with the advice of an alien intelligence, given the task of renewing civilization and starting humanity again up the ladder to the stars. Here is Arthur, unaware of his stellar heritage, and here too is the Lady of the Lake, akin to Merlin in that she is also a listener to the music of the spheres and obedient to a celestial command post."--Page 4, cover of the original DAW Books publication.