The famous line “there’s a sucker born every minute” is widely credited to showman P. T. Barnum, but historians agree there is no solid evidence he ever said it.

Most likely, the phrase came from people around the 19th‑century world of hoaxes and gambling rather than Barnum himself:

  • Some researchers trace the remark to David Hannum, an investor in the Cardiff Giant hoax, who supposedly said it while mocking crowds flocking to see Barnum’s rival exhibit.
  • Other accounts credit Chicago gambling boss Michael Cassius McDonald in the 1870s, who allegedly used the line when opening a large gambling house.
  • The wording (or close variants like “one born every minute”) was already circulating in print in the 1800s and associated generally with con men and gamblers, not a single documented speaker.

So, if you’re being precise:

  • Popular belief: P. T. Barnum said “there’s a sucker born every minute.”
  • Evidence‑based answer: the exact origin is uncertain, often attributed to David Hannum or Michael Cassius McDonald, but not reliably to Barnum himself.

Information gathered from public forums or data available on the internet and portrayed here.