This essay investigates the most tenacious resistance, the original one of nature, which resists the cognitive grip. Philosophy, born as an investigation into nature, unfolds as the thought of principle. But it is precisely the origin of the manifestation that remains hidden. The dialectical tension, configured by Luigi Pareyson, between the passivity of data and the activity of the human person, who freely assumes that data, forms the theoretical background to these pages. The Greek Plotinus and the Christian Bonaventure are here questioned as thinkers of the principle, concerned within nature. There remains the highest tension, that between nature and its origin, between our capabilities and their intrinsic transcendence. And remaining is a way to resist.
