The setting of this topic began with a speculative escapade, an imagining of where the truth lies regarding my question. Would there be anything in common between my speculation and reality? Scientific research would serve as intermediary between my 'imaginary' voice and my critical voice; between possibilities and realities, between what I expected and my predispositions. My intuition would carry me further than I expected. Working on this book took less time than foreseen but more than I had at my disposal. There was navigation of a sea full of emotions that accompanied me throughout my work. At times I felt splendid, sometimes fearful, ambitious, and sometimes anxious, but never felt pessimistic. (Author)