- How sure this is
- 36% sureLots of sources credit Benjamin Franklin with this, and they agree with each other. The book or the speech it first came from hasn't turned up yet.
- What turned up
- widely attributed to Poor Richard's Almanack, no primary source found — absent from Franklin's Wikiquote page entirely, and a dedicated Poor Richard's-quotes compilation (benfranklinvirtues.com) lists it without any year/edition citation, unlike its neighboring properly-cited entries.