India is considered the world guru in spirituality, all prevalent knowledge till date has ben transmitted by the process of guru - shishya (disciple) parampara in gurukuls. This book contains explanation of various tattvas (basic principles) by the same medium of guru-shishya parampara and is in easily comprehensible question-answer form, which transpired between Yugavtar Thakur Keshavchandra ji (Guru) and Jatish Kumar Sinha (shishya) during the period 1978 to 1993. All these question-answers kept appearing in Odia language in book Charam whose 50 periodicals were printed by the sangha 'Vishwa Bhratrutwa Divyatma Parishad' from the year 1993 to 2015. Apart from Odia language, they are also available in Hindi and now in English. The author (Compiler and translator) being a technocrat industrialist with 37 years of experience, came in contact with Thakur ji in the year 2006 and is associated with the organisation and the teachings of Thakur ji since then.