Tony Nader is a neuroscientist and leader of the Transcendental Meditation movement, one of the most influential spiritual organisations in the world.  Founded by Maharishi Mahesh Yogi, the movement has had many prominent members, from the The Beatles, the Beach Boys and Mick Jagger in the 60s to Filmmakers David Lynch and Martin Scorsese, and comedians Eric Andre and Jerry Seinfeld.  Dr. Nader took over the leadership in 2008 after training as a doctor in his native Lebanon and gaining a PhD in neuroscience from MIT.  He is the author of several books that aim to synthesise the ancient Vedic teachings of northern India with our modern scientific understanding of ourselves and the world around us.  His books include Human Physiology: Expression of Veda and the Vedic Literature, Ramayana in Human Physiology and, most recently, One Unbounded Ocean of Consciousness in which he argues that consciousness is all that exists.  He also hosts a podcast titled Consciousness is All There is.  As many of you will know this is not a stance that I agree with but I believe it is important to explore these ideas given their popularity amongst people who have had unitive mystical experiences.