I cannot overemphasize the importance of good grammar.

I cannot overemphasize the importance of good grammar.

What a crock. I could easily overemphasize the importance of good
grammar. For example, I could say: Bad grammar is the leading cause
of slow, painful death in North America, or Without good grammar, the
United States would have lost World War II.
-- Dave Barry, An Utterly Absurd Look at Grammar