Quintilian (c. 35–100 AD) was a renowned Roman rhetorician and educator born in Calagurris, Hispania. He served as tutor to the sons of Emperor Vespasian and became one of the most influential teachers of rhetoric in ancient Rome. His major work, Institutio Oratoria (The Orator's Education), is considered the most comprehensive treatise on rhetorical education from antiquity. Quintilian emphasized that a true orator must possess excellent moral character, advocating for education that develops both intellectual abilities and virtuous character.