On a closer look, the contents of this bookcase are actually quite eclectic. Several of the books appear to be self-published, with multiple copies of each. The owner of this office doesn't seem like much of a writer - perhaps they were written by a friend.
There are enough copies that the owner probably wouldn't miss one. In fact, if he bought them to give them away, you'd probably be doing the original author a favor.
Take a copy of "The Fabulist"
Take a copy of "Nerd World"
Take a copy of "All the Stars Within Our Grasp"
Leave the books alone