10.. The Steps of the Sun by Walter Tevis
Tevis is fast becoming one of my favorite authors. I read and very much enjoyed The Man Who Fell To Earth, The Hustler, and The Queen's Gambit before this book, all of which were slowly absorbing and profound in their own way despite their vastly different subject matters. This book was no different.
The Steps of the Sun takes place on an Earth that has exhausted its energy resources, where a diminished mankind is in the process of adapting to a nearly Medieval existence. One of the richest men on Earth, a maverick figure like Elon Musk, jets off into space in the first personal space craft in search of a fuel-rich planet.
It may sound somewhat juvenile and parts of the book certainly are, but Tevis's recurrent themes of addiction, psychological trauma and baggage, as well as healing are also present in this story. They make an interesting adventure of exploration and self-discovery, spiced by political intrigue.
Recommended.