The result of a series of lectures delivered during the 2016 Serpentine Galleries exhibition Hilma af Klint: Painting the Unseen , this volume gathers essays examining the last abstract series made by Hilma af Klint (1862-1944). The paintings were all created in the first half of the year 1920 and are the last paintings af Klint made before turning to watercolour. Reproductions of these images are complemented by essays from Briony Fer, David Lomas,...