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.
“I thought about that the other day after I went to the grocery store and had to sign fifteen autographs before leaving. On one hand, it's just so flattering. On the other hand, sometimes it would be nice to get the bread and leave, you know?”
“The greatest challenge of the day is: how to bring about a revolution of the heart, a revolution which has to start with each one of us?”