From Kant, European philosophy begins to speak in German. The imposing of the great philosophers that follow for a century and a half are a unique phenomenon in European history. Through the work of original thinkers and creators are raised and resolved for better or for worse the great spiritual problems, social and political issues of modern times. This philosophical trilogy was born and raised with the practice of teaching. The academic origin is visible in some of its features: it offers an exhibition or presentation of the way of thought of each philosopher, in its historical genesis and its chronological and systematic deployment, so that it can serve the reader, student or teacher philosophy, introduction to his study. It is accompanied by the relevant bibliographic information, given the state news sources, with their main editions, the Castilian versions, etc.., And the most relevant studies on the subject.