I became interested in ecstatic experiences when I was 24 and had a near-death experience. I fell off a mountain while skiing, dropped 30 feet, and broke my leg and back. As I lay there, I felt immersed in love and light. I’d been suffering from emotional problems for six years, and feared my ego was permanently damaged. In that moment, I knew that I was OK, I was loved, that there was something in me that could not be damaged, call it ‘the soul’, ‘the self’, ‘pure consciousness’ or what-have-you. The experience was hugely healing. But was it just luck, or grace?

Thus C. S. Lewis at the beginning of his book Miracles: “In all my life I have met only one person who claims to have seen a ghost. And the interesting thing about the story is that that person disbelieved in the immortal soul before she saw the ghost and still disbelieves after seeing it. She says that what she saw must have been an illusion or a trick of the nerves. And obviously she may be right. Seeing is not believing…. If anything extraordinary seems to have happened, we can always say that we have been the victims of an illusion. If we hold a philosophy which excludes the supernatural, this is what we always shall say. What we learn from experience depends on the kind of philosophy we bring to experience. It is therefore useless to appeal to experience before we have settled, as well as we can, the philosophical question.”