"The Religion of the Samurai" is a classic religious text by Kaiten Nukariya published in 1913.

Zen was uniquely suited to the Samurai of Japan. The high moral principles of Buddhism, when adopted and adapted by the Japanese warriors who became the Samurai, created an austere philosophy of singular beauty and depth. Its characteristic requirements of strict control over body and mind was exemplified by ancient warrior monks whose serene countenance, even in the face of certain death, made them much admired even by their foes.

Zen may be the most misunderstood of the world's moral philosophies. While it is often classified as a Religion, it is frequently considered by its adherents to be a utilitarian philosophy, a collection of rational moral precepts or, even more simply, as a state of being. The aim of the practice of Zen is to become Enlightened and achieve the beatitude of Nirvana.