“The Power of Truth” is a guide to mental training written by William George Jordan and first published in 1902. Concentrating on truthfulness, it explores how being sincere can significantly affect your own mental well-being and life in general. William George Jordan (1864 – 1928) was an American lecturer, editor, and essayist. He is most famous for his self-help books, especially those on the subject of mental training and cognitive improvement. Other notable works by this author include: “Mental Training” (1894), “The Kingship of Self-Control” (1898), and “The Majesty of Calmness” (1900). Contents include: “The Power of Truth”, “the Courage to Face Ingratitude”, “People who Live in Air Castles”, “Swords and Scabbards”, “The Conquest of the Preventable”, “The Companionship of Tolerance”, “The Things that Come too Late”, and “The Way of the Reformer”. Many vintage books such as this are becoming increasingly scarce and expensive. We are republishing this volume now in a modern, high-quality edition complete with a specially commissioned new biography of the author.