True, I talk of dreams,
Which are the children of an idle brain,
Begot of nothing but vain fantasy,
Which is as thin of substance as the air
And more inconstant than the wind, who wooes
Even now the frozen bosom of the north,
And, being anger’d, puffs away from thence,
Turning his face to the dew-dropping south.

– William Shakespeare

Romeo and Juliet, Act 1, Scene 4. The cynical Mercutio, on the way to the Capulet party with his dreamer friend Romeo, dismisses dreams as meaningless. In a metaphor, he tells Romeo that they are born like children from a lazy mind. He uses simile to say that they are an empty fantasy, which lacks substance like the air and is changeable like the wind. The wind is personified as being able to woo and get angry, while it also has a face.