Fluorine has a protecting action against caries, but this is a local effect. If you drink it, you are running the risk of all kinds of toxic actions.
“To other Canadians who are on journeys to defeat cancer and to live their lives, I say this: please don't be discouraged that my own journey hasn't gone as well as I had hoped. You must not lose your own hope.”
“Would Hamlet have felt the delicious fascination of suicide if he hadn't had an audience, and lines to speak?”