Stephen R. Donaldson

The portal structure is simply a technique: it is neither necessary nor unnecessary, except as the writer and the story make it so. In the case of 'The Chronicles of Thomas Covenant,' it was absolutely necessary to my intentions.

For a variety of reasons, my books struck the marketplace like a thunderclap; and one of those reasons was that there were so few alternatives available. Readers who loved Tolkien, and who were not satisfied by Terry Brooks, had nowhere else to turn.