MERCUTIO: You are a lover; borrow Cupid’s wings,
And soar with them above a common bound.
ROMEO: I am too sore enpierced with his shaft
To soar with his light feathers, and so bound,
I cannot bound a pitch above dull woe:
Under love’s heavy burden do I sink.

– William Shakespeare

Romeo and Juliet, Act 1, Scene 4. Mercutio tries his best to talk Romeo out of his gloom and not be a party pooper when they are at the Capulets’ ball. He advises him to metaphorically "borrow Cupid’s wings" and soar because he is in love. But Romeo, whose love is unrequited, puns that he is too "sore" to "soar." In another pun, "bound" is used in two different senses, first to mean constraint, and secondly to mean leap. This reflects the conflicting aspects to romantic love.