The writings that this book brings together form a political logbook, that is, a set of notes that attempt to record the inclemency and injuries of adverse times. The wisdom of error is what results from investigating the form of an errancy, the erring desired by the practice of freedom, that is, defeat. As defeat and as errancy, error is inscribed in the essence of a being whose nature is to begin, the ability to always begin again. To do so without succumbing to repetition, one must learn to lose, understood this word not primarily in the sense of "not winning" but of no longer having what one had. The wisdom of defeat and the learning of loss establish a regime of affections that has nothing to do with nostalgia for the past or political melancholy, but rather allows for a lucidity capable of accompanying and protecting - when it occurs, so that it occurs - the unleashing of a common imagination that is a tributary of the desire for emancipation that inexorably sprouts again and again.