Barnum: An American Life

There is no evidence that Barnum ever said, "There's a sucker born every minute," but it's hard to read this biography and not conclude that it was his belief.

Useful links:
https://barnum-museum.org/events/barnum-an-american-life
https://www.strategy-business.com/article/The-Greatest-Showman-on-Earth?gko=edcaa