The classic fantasy that influenced C. S. Lewis and Tolkien, considered one of George MacDonald's most important works, is the story of the young man, Anodos, and his adventures in fairyland which ultimately reveal the human condition. "I write, not for children," wrote George MacDonald, "but for the child-like, whether they be of five, or 50, or 75." All-at-once written with an innocent whimsy and soulful yearning, the heart of Anodos' journey through fairyland reveals a spiritual quest that requires a surrender of the self. MacDonald's fantasy novel as well as his other works have had major influence on many authors who considered him their mentor:

C. S. Lewis said, I have never concealed the fact that I regarded him as my master; indeed I fancy I have never written a book in which I did not quote from him.

J. R. R. Tolkien called his fairy tales stories of power and beauty.

Madeleine L'Engle said, Surely, George MacDonald is the grandfather of us all all of us who struggle to come to terms with truth through fantasy.