flourished 2nd century AD Greek grammarian. Apollonius is considered the founder of the systematic study of grammar. Priscian based his work on the writings of Apollonius. Four of Apollonius's works survive: On Syntax and the shorter treatises On Pronouns, On Conjunctions, and On Adverbs
born 240 BC, Perga, Anatolia died 190 BC, Alexandria, Egypt Mathematician known as "The Great Geometer. " His Conics was one of the greatest scientific treatises of the ancient world. In it he introduced the terms parabola, ellipse, and hyperbola. Because Conics was fundamental to later advances in optics and astronomy in the Islamic world, a 9th-century Arabic translation survived to fill in for some of the missing Greek original. Generally, his other writings survive only as titles
born 295 BC Greek poet and grammarian. He served as librarian of the famous Library of Alexandria. His Argonautica, a romantic epic in four books about the Argonauts, is derived from Homer and is noted for its suggestive similes, vivid descriptions of nature, and fresh handling of old episodes