"Dear child, Do not be frightened by the size of the book you are holding in your hands. Know that it is a treasure of scientific and philosophical knowledge, reflections, and activities for the search of truth. The book, with its 280 philosophical lessons, will accompany you in kindergarten, elementary school, middle school, high school, and even in the rest of your life. Its lessons will help you understand the human being, its logic, its soul, society, history, religions, truth, friendship, ethical and social values, work, merchandise, production, exchange, economy and its crises, exploitation, alienation, freedom, love, life, happiness, death, politics, the state, philosophers and their teachings, the first principles of the world, the big bang, black holes, the universe and the laws that govern it, as well as your place within it." (Dimitris Dousas, excerpt from "Letter to the little philosopher") For anyone who would ask the question: "But can children do philosophy?" the author has an advocate in a leading figure of Cognitive Psychology and discovery learning, Bruner, and his pedagogical principle: "Children, at any age, can learn and know everything, as long as the appropriate way, the appropriate teaching method is found, which will help them in this." The philosophical dialogue among children, around a different topic each time, contributes to the awakening of their philosophical questions and reflections. At the same time, as the author rightly points out, both this dialogue and its individual objects limit the violent resolution of differences among children, as they teach them and habituate them to resolve them with reason."