The book is authored by the Founder of Arya Samaj, Swami Dayanand Saraswati, his magnum opus, after a thorough study and critical examination and analysis of about 300 books of all faiths and prevalent religions of the mankind for the universal benefit of human beings.
The book was written in 1874 and published in 1875.
It contains fourteen Samulaases (Chapters) - the first eleven describing about existence and powers of God, Duties and Life Styles of human kind as enunciated in Vedas, Upvedas, Upnishads and Gita; the last three of a comparative critical analyses of all Faiths and Religions prevalent in the Universe.
A wonderful book must be studied by all men and women to understand the true knowledge and meaningful life as prescribed by Vedas.