My latest post of Black Gate on the Ballantine Adult Fantasy series is George MacDonald’s Lilith.  This one is an allegory that has some really weird passages in it.

The book also had a major influence on C. S. Lewis.  There’s some speculation that MacDonald’s use of mirrors to travel to other worlds may have influenced The Lion, The Witch, and the Wardrobe.   And of course, MacDonald was friends with Lewis Carroll, so Alice may have influenced George.