Survival of the fittest is a theory that explains how only the strongest, fastest, and most adaptable organisms are able to survive and reproduce in a competitive environment. This natural selection process ensures that the best adapted individuals pass on their genes to future generations, leading to the evolution of species over time.

The Coming Race is a novel about a subterranean world inhabited by beings with fantastic powers due to their direct access to a powerful energy force. The novel follows the narrator's adventures as he travels through this strange world, makes new friends, and eventually finds himself in a battle with an advanced race of beings.

When a Man's Single is a story about a young and ambitious journalist, Kenneth Dewar, who struggles with the temptations and pitfalls of literary life in London. He falls in love with a beautiful actress, but soon realizes that she is not the one for him. In the end, Kenneth realizes the importance of staying true to oneself and follows his passion for writing.