Pramukh Swamiji Maharaj, one of the most inspiring spiritual figures of modern times and the fifth spiritual successor of Bhagwan Swaminarayan, became a friend of the eleventh president of India, Dr A. P. J. Abdul Kalam. Together they created an unparalleled spirituality-science fellowship. In Roohdaar, Dr Kalam and Arun Tiwari map a journey of self-realization reflected in the eyes of Pramukh Swamiji, painting a delightful fusion of spirituality, science and leadership. Through the life of Pramukh Swamiji and the history of the Swaminarayan mission, Dr Kalam traces the great rise of the Indian diaspora across the world. Drawing from the lives of great scientists and creative leaders, the book captures the spiritual essence of all religions and is a a tribute to the multi-faith Indian society.