| Answer | Crossword Clue |
|---|---|
| ARSPOETICA | Treatise by Horace |
| POETICS | Treatise by Aristotle |
| PRINCE | Subject of treatise by Machiavelli. |
| THEARTOFWAR | Military treatise by Sun Tzu |
| SUMMATHEOLOGICA | Religious treatise by St. Thomas Aquinas |
| ALMAGEST | Astronomical treatise by Ptolemy, c. 150 A. D. |
| ARSPOETICA | MacLeish work inspired by a treatise published circa 18 B.C. |
