Until recently one begins to speak of the "experimental philosophy" in the thought of Nietzsche. This novel way of approaching the philosopher of Rocken is due specifically to the reflections of Andreas Urs Sommer, an eminent interpreter of Nietzsche. Sommer explains the "experimental philosophy" supported by paragraph 125 of The Gay Science and goes hand in hand with an important figure in that paragraph: the madman. This article aims to explain what "experimental philosophy" is and then describe that literary artifice, besides being found in paragraph 125, can be found in other texts by Nietzsche. That is to say, we will stop to analyze some texts of Thus spoke Zarathustra, fundamentally in those that are the question of the solitude. Is it possible to conclude that "experimental philosophy" can be framed in the theme of Nietzsche's solitude? The use of "experimental philosophy" can show us, as far as possible, a novel way of approaching the thoughts of the German philosopher and away from the conventional interpretation that has marked the twentieth century so profoundly. Does the philosopher really express his philosophy to us? It is a question that we intend to answer in this work.
