This work consists of 7 chapters that deal with the Bodhisattva doctrine as expounded in the principle Buddhist Sanskrit literature. Chapter 1 describes the nature of the Bodhisattva doctrine with particular stress on the distinct characteristics of arhat, bodhisattva and sravaka. Chapter 2 recounts the different factors including the influence of Persian religio-cult, Greek art and Christian ethics that contributed to the rise and growth of the Bodhisattva doctrine. Chapter 3 expounds the production of the thought of Enlightenment for the welfare and liberation of all creatures. Chapter 4 describes 37 practices and principles conducive to the attainment of Enlightenment. Chapter 5 explains the 10 perfections (Paramitas) that lead to welfare, rebirth, serenity, spiritual cultivation and supreme knowledge. Chapter 6 states different stages of spiritual progress in the aspirant's long journey to the goal of final emancipation. Chapter 7 relates the events of Gautama Buddha's past lives as Bodhisattva.