Rhetoric Day 115.1
Simile is the comparison of one figure with another, implying a certain resemblance between them. This is used either for praise or censure. For praise, . . . “He entered the combat in body like the strongest bull . . .” For censure, . . . “That wretch who daily glides through the middle of the Forum like a crested serpent, . . .”
- Cicero "Ad Herennium"