Hilma af Klint (1862-1944) is unknown to many but she was a pioneer among pioneers of abstract art. Five years before Vasily Kandinsky published On the Spiritual in Art (1912), Hilma was already painting it.
In 1918 Hilma began to analyze her own work and, since her paintings were large, she reproduced them in miniatures that she carried in a small suitcase, as portable museums. Hilma died at the age of 82, after ordering that her paintings not be shown for a period shorter than that recommended by Rudolf Steiner.