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

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

#poem[
  #block[
    “You are old, Father William,” the young man said, \
    #h(1em)“And your hair has become very white; \
    And yet you incessantly stand on your head--- \
    #h(1em)Do you think, at your age, it is right?”
  ]

  #block[
    “In my youth,” Father William replied to his son, \
    #h(1em)“I feared it might injure the brain; \
    But, now that I'm perfectly sure I have none, \
    #h(1em)Why, I do it again and again.”
  ]

  #block[
    “You are old,” said the youth, “as I mentioned before, \
    #h(1em)And have grown most uncommonly fat; \
    Yet you turned a back-somersault in at the door--- \
    #h(1em)Pray, what is the reason of that?”
  ]

  #block[
    “In my youth,” said the sage, as he shook his grey locks, \
    #h(1em)“I kept all my limbs very supple \
    By the use of this ointment---one shilling the box--- \
    #h(1em)Allow me to sell you a couple?”
  ]

  #block[
    “You are old,” said the youth, “and your jaws are too weak \
    #h(1em)For anything tougher than suet; \
    Yet you finished the goose, with the bones and the beak--- \
    #h(1em)Pray, how did you manage to do it?”
  ]

  #block[
    “In my youth,” said his father, “I took to the law, \
    #h(1em)And argued each case with my wife; \
    And the muscular strength, which it gave to my jaw, \
    #h(1em)Has lasted the rest of my life.”
  ]

  #block[
    “You are old,” said the youth, “one would hardly suppose \
    #h(1em)That your eye was as steady as ever; \
    Yet you balanced an eel on the end of your nose--- \
    #h(1em)What made you so awfully clever?”
  ]

  #block[
    “I have answered three questions, and that is enough,” \
    #h(1em)Said his father; “don't give yourself airs! \
    Do you think I can listen all day to such stuff? \
    #h(1em)Be off, or I'll kick you down stairs!”
  ]
]