Once a word has been allowed to escape, it cannot be recalled.
Context / explanation
Last words are for fools who haven't said enough.Karl Marx
Words are only painted fire; a book is the fire itself.Mark Twain
The difference between the right word and the almost right word is the difference between lightning and a lightning bug.Mark Twain
Words ought to be a little wild for they are the assaults of thought on the unthinking.John Maynard Keynes
You can get much further with a kind word and a gun than you can with a kind word alone.Al Capone