Peter Trawny, the editor of the recently published Black Papers Martin Heidegger, presented in this paper an original and bold interpretation of thought of this philosopher, aimed to understand the reason why Heidegger himself decided to publish these personal writings, which bring revealed his relationship with the Nazi regime and anti-Semitism.

When the conference of the essence of truth Heidegger esclarecía to what extent the "error" belongs to the event of truth pointed his greatest success the character of his thought: open, erratic, free, anarchic, uncertain ... like " forest paths "of the black forest knew so well. For Heidegger, the err is not only inevitable, but belongs to the truth itself ... and there is no moral law beyond the event of truth and experience in thinking. Moreover, good and evil are regions of a historical topography in which the man is always on the way, wandering.

I would not have written this essay if I thought that here, in this "leakage error", the case of dispute is linked with the name of Heidegger congregate. For if the "error" joins the "clear" because the "clear" need "error", then the err of Heidegger, their wanderings are a moment of philosophy.