While most people know Jacob and Wilhelm Grimm for their fairy tales, Jacob Grimm was actually a founding father of German philology. In 1819, he published the first volume of his monumental work, Deutsche Grammatik , a historical study of Germanic languages rather than a simple rulebook. It was here that he formulated "Grimm’s Law," explaining how consonant sounds shifted over centuries, connecting German to ancient roots. The Heroes of the Story: The Four Cases

In the "story" of everyday German, four main characters—the —rule the kingdom of sentences:

The one who shows belonging (e.g., Das Buch des Mannes ). Modern Companions