In this article the problem expounded to Locke by the irish scientist William Molyneaux durin late XVII is exposed, over the blind from birth who adquire sight during adulthood. Over this base the roll is called upon clasical and contemporary, between diferent sensorial fields, specially the ones concerning sight and touch. The contributions concerning the french enlightened during XVIII and the renowned psychologists and neuropsychologists of our times are here properly examined. The final intention of the article is to sketch what could be the fundaments of a new gnoseology and metaphysics supported on a volitive-tactile paradigm. That is how, as of these reflections lays what we have named "Critique of the tactile reason".En este artícul...