Great Regulars: There are blows in life,

so powerful . . . I don't know!

This line interrupts, undermines itself, in the middle of seeming to make a sweeping statement.

Or how about:

Night is a cup of evil. Shrilly a police whistle
pierces it, like a vibrating pin

from John Timpane: Philadelpia Inquirer: Vallejo, the bard of Peru

~~~~~~~~~~~