 Some writers, such as Joris-Karl Huysmans, began as naturalists before becoming symbolists; for Huysmans, this change represented his increasing interest in religion and spirituality.Certain of the characteristic subjects of the Decadents represent naturalist interest in sexuality and taboo topics, but in their case this was mixed with Byronic romanticism and the world-weariness characteristic of the "fin de siècle" period.The Symbolist poets have a more complex relationship with Parnassianism, a French literary style that immediately preceded it.