Bushido, The Soul of Japan is, along with the classic text Hagakure by Tsunetomo Yamamoto, a study of the way of the samurai. A best-seller in its day, it was read by many influential foreigners, among them President Theodore Roosevelt, President John F. Kennedy and Robert Baden-Powell. It may well have shaped Baden-Powell's ideas on the Boy Scout movement he founded.

As Japan underwent deep transformations of its traditional lifestyle while forging into a modern nation, Nitobe engaged in an inquiry into the ethos of his nation, and the result of his meditations was this seminal work. A fine stylist in English, he wrote many books in that language, which earned him a place among the best known Japanese writers of his age.

He found in Bushido, the Way of the Warrior, the sources of the virtues most admired by his people: rectitude, courage, benevolence, politeness, sincerity, honor, loyalty and self-control. His approach to his task was eclectic and far-reaching.

Nitobe Inazo was a Japanese agricultural economist, author, educator, diplomat, politician, and Christian during Meiji and Taisho period Japan.