When he died, Novalis had only published "Pollen", "Faith and Love", "Blumen", and "Hymns to the Night". Most of Novalis's writings, including his novels and philosophical works, were neither completed nor published in his lifetime. This problem continues to obscure a full appreciation of his work. His unfinished novels "Heinrich von Ofterdingen" and "The Novices at Sais" and numerous other poems and fragments were published posthumously by Ludwig Tieck and Friedrich Schlegel. However, their publication of Novalis's more philosophical fragments was disorganized and incomplete. A systematic and more comprehensive collection of Novalis's fragments from his notebooks was not available until the twentieth century.