In the arena of thought, when a new idea is born, even if it is just a new guise for an old idea, it is certain that, sooner or later, its antithesis will also emerge and spread with proportional force. The precision of this rule seems to point us to the cyclical nature of human thought: a cycle, however, which is not just a closed circle of repeating events, but, through a movement that seems to move forward and backward, expand and contract, affirm and deny, developing in a series of reasonably predictable stages, increases its own complexity and gives new nuances as time progresses. It is therefore a creative cycle that requires controversy in order to develop.