Material in this book forms the preface to the Gospel of Sri Ramakrishna published in 1942. It contains a short biography of the Master based mainly upon the Life of Sri Ramakrishna published by Advaita Ashrama https://sfvedanta.org/books/life-of-sri-ramakrishna/
Also included in this book are short explanations of several systems of Indian religious thought associated with Sri Ramakrishna's spiritual disciplines and experiences. The last part of the book, entitled 'After the Passing Away', gives a picture of the daily life of Sri Ramakrishna's disciples after his death and reveals the ascetic background of the Ramakrishna Mission.