Cusa's mystical-religious philosophy was set forth in his essays De Docta Ignorantia (Of Learned Ignorance), which was published in 1440. This work consists of three books: the first deals with God (the Self Maximus considered absolutely), the second deals with the universe (Self maximum contracted in the Plurality of Things), and the third of Jesus Christ (Self up as contracted and all at once). The title -which is an oxymoron- has a deep significance. On the one hand it relates to Socrates' irony -"I only know that I know nothing"- in the belief that it is impossible for a student to deepen his knowledge in his search for truth. It is also a negative theology, the recognition that the Being of God cannot be reached by our understanding. Our current edition presents an illustrated version of the First Book