"Theodore Roosevelt: An Intimate Biography" by William Roscoe Thayer is a historical account written in the early 20th century. The work provides an in-depth exploration of Theodore Roosevelt's life, character, and political career, capturing the essence of his impact during a significant period in American history. At the start of the biography, the author clarifies his intention not to write a eulogy but rather a candid portrayal of Roosevelt, whom he knew personally over forty years. Thayer reflects on their relationship against the backdrop of Roosevelt's prominent role in shaping the moral fabric of the nation, especially in light of his actions during World War I. The chapter then delves into Roosevelt’s origins and