1. the use of classical Greek and Roman models of poetry.
2. the purpose of poetry was thought to be to instruct and delight the population.
3. the idea that human society should be ordered, balanced, and rational, just as the universe was thought to be; any upset of this careful balance of nature could have catastrophic consequences.
4. the use of satire in order to point out flaws in human behavior/society. (satire was used to mock certain behaviors; by pointing them out and mocking them, authors hoped to get people to correct them)