All these books (apart from the second one) offer a peak into Advaita Vedanta (Non Duality). a) Talks with Sri Ramana Maharshi b) Tao te ching, Lao Tzu c) I am

All these books (apart from the second one) offer a peak into Advaita Vedanta (Non Duality). a) Talks with Sri Ramana Maharshi b) Tao te ching, Lao Tzu c) I am That, Nisargadatta Maharaj d) Power of Now, Eckhart Tolle e) Silence of the heart, Robert Adams