This is a rare book written by a disciple of Gharib Das, who served as one of the successors to Shiv Dayal Singh, the founder of Radhasoami in the mid-19th century. This book was first published in the United States by Tom Curtis some 50 years ago. The MSAC Philosophy Group is pleased to bring it back into circulation. Describes how shabd yoga works and the inner journey of light and sound that follows deep meditation.