The next book in the “100 Greats” series tells about the life and work of the most outstanding prophets and religious teachers of the world from the “great initiates” of antiquity to the creators of supra-confessional movements of the twentieth century. At all times, religious ideas and religious teachings played a huge role in the life of human society . And in the current nuclear-space age, out of 6 billion earthlings, only 850 million people openly declare themselves non-believers or indifferent to religion. Undoubtedly, the brightest personalities in the history of mankind are the founders of religion (Jesus Christ, Buddha, Muhammad, Moses, Zoroaster, Confucius). However, studying the lives and deeds of prominent missionaries, great reformers and remarkable theologians also allows us to understand the evolution of the spiritual and moral quest of the human race.