Kandinsky was similarly influenced during this period by Richard Wagner's Lohengrin which, he felt, pushed the limits of music and melody beyond standard lyricism.[citation needed] He was also spiritually influenced by Madame Blavatsky (1831–1891), the best-known exponent of theosophy. Theosophical theory postulates that creation is a geometrical progression, beginning with a single point. The creative aspect of the form is expressed by a descending series of circles, triangles and squares. Kandinsky's book Concerning the Spiritual In Art (1910) and Point and Line to Plane (1926) echoed this theosophical tenet. Illustrations by John Varley in Thought Forms (1901) influenced him visually.[6]