This work describes the qualities and implications, in the field of psychology, of two principles which can be observed in the physical and biological world: the principle of entropy and the principle of syntropy. The description of the qualities of entropic and syntropic phenomena can be found in the works of Luigi Fantappiè ), one of the major Italian mathematicians, who, while working on quantum mechanics and special relativity, discovered that all physical and chemical phenomena, which are determined by causes placed in the past, are governed by the principle of entropy, while all those phenomena which are attracted towards causes which are placed in the future (attractors), are governed by a principle which is symmetrical to entropy and which Fantappiè named syntropy.

Analyzing the EPR paradox, Schrödinger concluded that the problem lies in the way time is used in quantum mechanics. The Schrödinger wave equation, which was the focus of most of the discussion surrounding EPR, is not relativistically invariant and treats time in an essentially classical way. For example it assumes that there can be a well-defined "before" and "after" the collapse of the wave function. Once the wave function collapses into a particle, the event is irreversible. On the contrary, when the relativistically invariant wave equation (Klein-Gordon's equation) is taken into account, there is no collapse of the wave function. In this paper a time symmetric interpretation, proposed by the mathematician Luigi Fantappiè in 1941, is presented and four experiments which support this interpretation and challenge the Copenhagen Interpretation are discussed. In Cramer's Transactional Interpretation and in de Beauregard's Advanced-Action Interpretation the EPR paradox disappears when advanced waves are considered to be real physical entities.

In 1977, the authors presented a Vital Needs Model that required an independent property, symmetrical to entropy, which is here named "syntropy." According to this model syntropy could not be a product of the laws of the macroscopic world, as all the laws of the macrocosm are dependent on entropy. For this reason the authors searched evidences of the property of syntropy at other levels, finding, at the quantum mechanic level, equations that always yield a positive solution, retarded waves which move forward in time, and a negative solution, advanced waves which move backward in time. In 1941 the mathematician Luigi Fantappiè demonstrated that advanced waves concentrate energy, produce differentiation and structures, and show qualities which are identical to those which can be observed in living systems. In this way, Fantappiè arrived at the conclusion that living systems are a manifestation of causes originated in the future (retrocausality).

- Ericksonian psychotherapy and Unitary Theory of Psysical and Biological Worlds of Luigi Fantappič: orientation towards the future. Since the first lesson at the School of hypnosis and ericksonian psychotherapy in Rome the Author was impressed by the similarities with the Unitarian Theory of the Physical and Biological Worlds suggested in 1941 by Luigi Fantappič, one of the most important Italian mathematicians of the last century. Fantappič's model starts from the integration of special relativity with quantum mechanics and is one of the most incredible models in the attempt to understand the properties of self-organization of living systems, described as systems which are attracted by the future. In this paper Fantappič's model will be presented and the common points with the ericksonian psychotherapy will be discussed.Key words: syntropy, vital needs, retrocausality, psychotherapy, quantum mechanics, special relativity.Parole chiave: sintropia, bisogni vitali, retrocausalitŕ, psicoterapia, meccanica quantistica, relativitŕ ristretta.

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