Synopsis This book deals with the efforts made by two notable saint poets cum reformers of medieval India, Viz., Kabir and Gurunanak for establishing social harmony, Hindu-Muslim brotherhood and peace in the days of ethnic violence and religious intoleration.  It also deals with the facts how, since their own young ages, those two saint-reformers opposed rigid Brahmanic Caste System and conception of untouchability and opened the door of spiritualism for all by showing the path of Karma (action) and Bhakti (devotion).  They taught about the essence of Dharma, that is the beauty of human activity is renunciation in action, not renunciation of action.  They protested against age old dogmas, rituals, idol worship, customary principles, hatred, violence, hyprocricy, blind faiths, rigid caste system, scriptural laws, most of which are even practiced today while giving rise to communal hatred, riots, eploitation and suffer its of human beings.  They demonstrated the path of Sahaj Yoga based on the principles of complete surrender to God and deep faith, love and devotion for him, simplicity, honesty, morality, sincerity and human values which are badly required even today. In modern period, not only India but the whole world have become victims of ethnic violence, cruel exploitation, religious into-lereation and communal terrorism.  In such context the study of life of Kabir and Guru Nanak have a historical significance, as it can serve as a new inspiration to save the human civilization from the cavity of fall.