Bite Marks on My Tongue

The bite marks on our tongue don't show.  Though I've said this for years, I shared it this week with two friends I've known for 15 years, who hadn't heard me say it.  Many scars from things done and undone show.  But, when we refrain from uttering unkind remarks, the bite marks on our tongue never show.  I'd not thought of the corollary before, but the resulting goodwill manifests in many visible ways.