It’s 25 years since my epic fantasy novel Stone & Sky was first published in paperback by HarperCollins.

The novel begins when Victorian adventurer Jonah Lightfoot is mysteriously transported to the seemingly infinite world-wall of Amara, also known as Stone. Exploring this strange tilted realm, Jonah experiences an extraordinary collision between history and myth … and begins his quest to secure the future of humanity’s very existence.

While writing the book, I enjoyed an ongoing conv...