Book 3
4.1
The simile also is a metaphor; for there is very little difference. When the poet says of Achilles,Compare Hom. Il. 22.164 ἐνάντιον ὦρτο λεὼν ὥς. he rushed on like a lion, it is a simile; if he says, a lion, he rushed on, it is a metaphor; for because both are courageous, he transfers the sense and calls Achilles a lion.
4.2
The simile is also useful in prose, but should be less frequently used, for there is something poetical about it. Similes must be used like metaphors, which only differ in the manner stated.
