Atmasiddhi Shastra (Six Spiritual Truths of the Soul) is the work of Srimad Rajchandra of India. It is a simple question-and answer work that engages a conversation between a doubter and a teacher (a guru) about the nature of the soul. Rajchandra was guru to Mahatma Gandhi. The book has forewords given by the XIV Dalai Lama and the Prime Minister of India, Narendra Modi.