19th-century artists and intellectuals were greatly inspired by the ideas of the French Revolution and the great poets and writers Johann Wolfgang von Goethe (1749–1832), Gotthold Ephraim Lessing (1729–1781) and Friedrich Schiller (1759–1805). The Sturm und Drang romantic movement was embraced and emotion was given free expression in reaction to the perceived rationalism of the Enlightenment. Philosophical principles and methods were revolutionized by Immanuel Kant's paradigm shift. Ludwig van Beethoven (1770–1827) was the most influential composer of the period from classical to Romantic music. His use of tonal architecture in such a way as to allow significant expansion of musical forms and structures was immediately recognized as bringing a new dimension to music. His later piano music and string quartets, especially, showed the way to a completely unexplored musical universe, and influenced Franz Schubert (1797–1828) and Robert Schumann (1810–1856). In opera, a new Romantic atmosphere combining supernatural terror and melodramatic plot in a folkloric context was first successfully achieved by Carl Maria von Weber (1786–1826) and perfected by Richard Wagner (1813–1883) in his Ring Cycle. The Brothers Grimm (1785–1863 & 1786–1859) collected folk stories into the popular Grimm's Fairy Tales and are ranked among the founding fathers of German studies, who initiated the work on the Deutsches Wörterbuch ("The German Dictionary"), the most comprehensive work on the German language.