Volume 2 of 2. This work claims the consideration of the historian of the culture of Asia, of the Sanskrit philologist and of the general philosopher. It is the last of a series of three works destined to elucidate what is perhaps the most powerful movement of ideas in the history of Asia, a movement which, originating in the 6th century BC in the valley of Hindustan, gradually extended its sway over almost the whole of the continent of Asia, as well as over the islands of Japan and of the Indian archipelago. These works are thus concerned about the history of the ruling ideas of Asia, Central and Eastern.