Pages 354. 58 illustrations. The book is divided into three parts. In the first part (The intuitions) the author deals with the most relevant hypotheses on the illusory reality of the perceptible world. The existence of a level of consciousness that transcends matter has been envisaged by the great thinkers. We find this idea in Plato's Myth of the Cave, in Berkeley's Immaterialistic Theory, in the Psychology of Form. The most authoritative source...