Related:

• Those who know, do not say; those who say, do not know.
• I must say, when the doorman where I live puts up the Christmas tree in the lobby, he has the same friendly smile for those who have remembered him at Christmas and those who have not.
  Except that when he trims the tree, if you have not, there you are on the tree, hanging in effigy....
• Why do those who speak loudest always have the least to say?
• Who dat who say "who dat" when I say "who dat"? -- Hattie McDaniel
• When you have nothing to say, say nothing. -- Charles Caleb Colto
• Of those who say nothing, few are silent. -- Thomas Neill
• Men do not live by the mind, you say? I have withdrawn those who do.
  The mind is impotent, you say? I have withdrawn those whose minds aren't....
• When opportunity knocks, say YES, then figure out HOW.
• America works less, when you say "Union Yes!