We are still at the begining of the contemporary developments of the gauge theories in the formal aspect and in their phenomenological analysis. In order to feel the all the long travelled (and to be travelled) way we end pronouncing the sounding key words: grand unification; supersymmetry; compound models; substructure; supergravity; desert?; strings; superstrings; theory of everything!?...
``The lover of the myth is somehow a philosopher, because the myth has the access to the origin. In fact, the amazement has been, now as before, the reason for the beginning of human philosophy".(Aritotle, Metaphysics, I, 2, 982b)