Mahendranath Gupta, better known as “M.”, arrived at Dakshineswar in March 1882. He belonged to the Brahmo Samaj and was headmaster of the Vidyasagar High School at Syambazar, Calcutta. At the very first sight the Master recognized him as one of his “marked” disciples. Mahendra recorded in his diary Sri Ramakrishna’s conversations with his devotees. These are the first directly recorded words, in the spiritual history of the world, of a man recognized as belonging in the class of Buddha and Christ. The present volume is a translation of this diary. Mahendra was instrumental, through his personal contacts, in spreading the Master’s message among many young and aspiring souls.