The Art of Grammar

Aristarchus's student Dionysius Thrax (c. 170–c. 90 BC) established a school on the Greek island of Rhodes. Dionysius Thrax wrote the first book on Greek grammar, a succinct guide to speaking and writing clearly and effectively. This book remained the primary grammar textbook for Greek schoolboys until as late as the twelfth century AD. The Romans based their grammatical writings on it, and its basic format remains the basis for grammar guides in many languages even today.