On af Klint's use of botany and science to elaborate her spiritual visionDuring the last years of the 1910s, Hilma af Klint created several series of small paintings in which she systematically explored an abstract idiom with the help of ruler and compasses. The triangles, squares, circles, and ellipses that appear here in constantly new constellations express a spiritual dynamic, according to af Klint's notebooks from these years. Hilma af Klint considered this work a kind of research, and she used 'spiritual scientific' methods - a term borrowed from anthroposophy - in order to understand the evolution and development of mankind. In her studies of living beings, she gained insight into an abstract world of geometrical conditions and guidelines.