Religion of man is essentially a compilation of some speeches given by Tagore on the idea of religion. He traces the origins of the idea of God from antiquity to the most modern and recent religions. He elucidates on why it was and still is necessary to have a God or some supernatural force to believe and trust in. He also, explains how each religion essentially says the same thing and identifies with the importance of humane values and human dignity.
Tagore's religion of man engages with them idea of God and provides reasons and evidence for its importance for humankind. Tagore's religions is of a humanitarian kind which has assimilated ideas from various religions. He tries to show that all religions essentially say the same thing. The essays are in the form of speech which gives them a crispier edge.