Metaphysics only makes sense if it is aware of its finiteness and relativity. This is the premise on which part Miquel safe in this book, which examines the relationship between analogy and finite difference. Endorsing the burnout that transmit many large speculative stories, the author claims the analogy as the best reflection of the human condition and its impact on the management of the "big questions". The work is divided into eight chapters that dialogue with Plato, Aquinas, Suarez, Tillich and Jaspers, from which a journey that leads to the demand for a secular and inter metaphysics (hermeneutics), open to the approach is drawn issues "ultimate".