Answer:
Antithesis
Step-by-step explanation:
The figure of speech used in this excerpt from Shakespeare's Romeo and Juliet is Antithesis , which means 'the opposite' . This rhetorical device has the purpose of showing contrasting effect when two opposite ideas are used together in the same sentence: "you have dancing shoes" (this allows her to have free movements ); "I have a soul of lead" (Romeo feels he cannot move ).