In this dialogue between the most intimate conscience and the mysteries of everyday life, López Mills traces the trail of his own identity. By means of the question as sustenance of metaphysics, he advances with boldness and daring in areas that shine with his gaze. The name, the memory and the family, the construction of reality, the sentimental education of books, the company of cats, the habits that grew unintentionally and to which it is no longer possible to refuse. Book of the explanations brings together thirteen essays that together are a journey into the interior of a spirit.