What has the author Quintillanus Icenus written?

There is no known author named "Quintillanus Icenus." It's possible that there is a misspelling or an error in the name.

Perhaps you are thinking of:

* Quintilian: A Roman rhetorician and educator who lived in the first century AD. He is famous for his work "Institutio Oratoria," a comprehensive treatise on the art of rhetoric.

It's always helpful to double-check names and spellings to find the correct author you're looking for.