Please help A.S.A.P

I'm having a problem. I need to write an essay on Ben Franklins quote "Three may keep a secret if Two of them are dead". I can't find the meaning for it anywhere can anyone help me? Please, It is a dire emergency.

"Three may keep a secret if Two of them are dead."

It simply means that once a person shares a secret with two other people, it will get around. It's impossible for three people to keep a secret unless two are dead. Dead men tell no tales, you know.

Remember Monica, Bill and Linda Tripp?