This is the most exclusive book in the world for this moment. It explains what intelligence implies and in an integral way it describes why it is what intelligence is in its ontological essence. Comprehending the basic essences and the relevant principles it may be the start of your own journey. This book explains the relationship of intelligence with energy, considered from the perspectives of world's most famous Mathematicians, Physiologists, Philosophers, Psychologists and Quantum Physicists. Based on Leibniz, Euler, Riemann, Aristotle, Plato, Socrates, Jung, Freud, Lacan, Bergson, Tesla, Einstein, Heisenberg, Bohm, Dirac and more. This 4th version comprises the little book ""metaphysics"" now based on the insights of Henri Bergson and his book ""Creative Evolution"" of 1907.