The objective in this dissertation is to characterize thought from the requirement of a consideration of aesthetic, that is, of the sensible world, in the context of exhaustion of the Metaphysical understanding that opposed it to the non-sensible. In other words, it intends to formulate the question of the access of thought to reality without resorting to traditional transcendental parameters that, while providing orientation, also subjugated the sensible world to previous rules alien to it. In the context of modern thought, this possibility took form, perhaps for the first time, in the reflections of Kant on beauty. In it, the aesthetic experience was freeed from the cognitives or moral interests that submitted it to conceptual or rational constraints. This meant opening the way for a disinterested approach to thinking, in which one does not ask the truth about a thing, but the truth of the thing. Instead of subordinating the particular to a previous universal rule, disinterested thought seeks to find the universality of that particular in its own singularity. It needs to find the truth that dwells within the thing, and does not stand outside of it. Against the background of this question, this dissertation details the interpretation of disinterestedness, that not only led to the examination of its position in the thought of Kant, but also in that of Schopenhauer and Nietzsche, in addition to the references, explicit and implicit, to contemporary authors, especially Martin Heidegger, Walter Benjamin and Hannah Arendt.