In this thorough critical appraisal, 20 specialists on modern art, art history, philosophy and religious studies examine the unique art, the cultural circumstances and art-historical positioning of Swedish abstractionist Hilma af Klint. Topics explored range from early abstract art and the impact of Darwinism to Goethe's colour theory, as well as the importance of occult religious movements such as theosophy and anthroposophy that influenced the early modernists, and discussions of af Klint's own personal diary notes and research.

The book is based on the seminars that were held in conjunction with the exhibition Hilma af Klint: A Pioneer of Abstraction in 2013. This extremely successful exhibition attracted a record number of visitors to the Moderna Museet in Stockholm, after which it continued to the Hamburger Bahnhof Museum in Berlin and the Louisiana Museum of Modern Art in Denmark.