It (the dash ) is a comfortable punctuation mark since even the most rigorous critic can seldom claim that any particular example of it is a misuse. Its overuse is its greatest danger, and the writer who can't resist dashes may be suspected of uncoordinated thinking.
Bergen EvansThere is no necessary connection between the desire to lead and the ability to lead, and even less the ability to lead somewhere that will be to the advantage of the led.
Bergen Evans