Miyamoto Musashi, Yamamoto Tsunetomo, Inazo Nitobe (2010). “Honor: Samurai Philosophy of Life - The Essential Samurai Collection; The Book of Five Rings, Hagakure: The Way of the Samurai, Bushido: The Soul of Japan.”, p.67, Bottom of the Hill
Said about Charles Evans Hughes in November 1909. "Taft and Roosevelt: The intimate letters of Archie Butt" by Archibald Willingham Butt, p. 224, 1930.