Answer
Annie Besant's Theosophical writings significantly influenced the Belgian Symbolist painter Fernand Khnopff. Besant, a prominent Theosophist, explored themes of spirituality, reincarnation, and the occult in her works. Khnopff, drawn to these ideas, incorporated Theosophical symbolism and imagery into his paintings, particularly in his depictions of enigmatic and ethereal female figures. Besant's writings provided a framework for Khnopff's exploration of the inner world and the mysteries of the cosmos.