The book "The Secret of Heroism: The Memoirs of Henry Albert Harper" is written by William Lyon Mackenzie King, a Canadian politician and writer. In this book, the author tells about the fascinating life and extraordinary events that became overflowing with the heroism of Henry Albert Harper. Delving into the details of the events, the book helps the reader to understand not only the hero himself, but also the essence of true heroism. A well-known Canadian publicist, King brings to this literary work his deft skill with words and the ability to reveal the deep thoughts and feelings of the characters. "The Secret of Heroism" fascinates with its story, reveals new facets of heroism and inspires the reader to his own actions.