In this book from Swami Vivekananda  the author explores the universal nature of Bhakti (devotion) and the concept of a Personal God.

The book  highlights that nearly all world religions center around a Personal God, which naturally fosters a culture of devotion and worship. He notes two significant exceptions: Buddhism and Jainism. These traditions do not subscribe to the idea of a supreme Personal Creator.

However, Vivekananda observes an interesting psychological parallel: despite the absence of a traditional deity, followers of these faiths worship their founders (the Buddha and the Tirthankaras) with the same intensity and ritualistic devotion that others reserve for a Personal God. Ultimately, the text suggests that the human impulse toward worship is a fundamental constant across different spiritual frameworks.