
There is no evidence that Franklin ever actually said or wrote this, but it's remarkably similar a quote often attributed, without proper sourcing, to Alexis de Tocqueville and Alexander Fraser Tytler:
:A democracy cannot exist as a permanent form of government. It can only exist until the majority discovers it can vote itself largess out of the public treasury. After that, the majority always votes for the candidate promising the most benefits with the result the democracy collapses because of the loose fiscal policy ensuing, always to be followed by a dictatorship, then a monarchy.
Misattributed