Henry Van de Velde, born in Antwerp, was another central figure in the birth of Art Nouveau. His architecture included his residence, the Bloemenwerf (1893-96) influenced by the Red House of work of William Morris. Van de Velde, like Horta, designed not just the house, but also the interior decoration. Trained as a painter, he became one of the first Art Nouveau designers, creating textiles, wallpaper, silverware, jewellery, and even clothing that matched the style of the residence. He was also an early theorist of the Art Nouveau style, demanding the use use of dynamic, often opposing lines. Van de Velde wrote: "A line is a force like all the other elementary forces. Several lines put together but opposed have a presence as strong as several forces". He found it difficult to compete with Victor Horta, and the two men disliked each other. Van de Velde moved to Germany, where he founded Grand-Ducal School of Arts and Crafts in Weimar and then played an important role in the German Werkbund.