#let poem(content) = {
  set par(first-line-indent: 0em)

  align(center, block[
    #set align(left)
    #set block(breakable: false)
    #content
  ])
}

#poem[
  #block[
    “I sent to them again to say \
    ‘It will be better to obey.'
  ]

  #block[
    The fishes answered with a grin, \
    ‘Why, what a temper you are in!'
  ]

  #block[
    I told them once, I told them twice: \
    They would not listen to advice.
  ]

  #block[
    I took a kettle large and new, \
    Fit for the deed I had to do.
  ]

  #block[
    My heart went hop, my heart went thump; \
    I filled the kettle at the pump.
  ]

  #block[
    Then some one came to me and said, \
    ‘The little fishes are in bed.'
  ]

  #block[
    I said to him, I said it plain, \
    ‘Then you must wake them up again.'
  ]

  #block[
    I said it very loud and clear; \
    I went and shouted in his ear.”
  ]
]