The book offers an analysis of the relationship between Kazimir Malevich – the artist who more than any other has faced the problem of the vision of the invisible - and the aesthetic-philosophical dimension of the icon. After having retraced the theological and spiritual foundations, the author examines the work of the founder of Suprematism starting from the famous Black Square - one of the myths and institutive rites of modern-contemporary art - and of this real last icon. It also provides a reading that runs in parallel with the De visione Dei (1453), an extraordinary writing by the philosopher and theologian Nicola Cusano. In the work of Malevich the artistic and theological-philosophical problem of the icon takes on new life. This means that in reality the avant-gardes do not operate a tabula rasa (the «password» with which they have always self-presented themselves) of the previous artistic-philosophical culture, but that the intertwining between belonging and modification also comes to life in those cases in which the radical zeroing and the most innovative reworking is more evident. The famous «black square» of malevich represents the emblem of a new artistic, theological and philosophical concept of the icon, studied from its foundation onwards.