Colleen Lindsay (quoted earlier here this week on novel length), posted a great quote from a screenwriter/director on her blog:
It rarely takes more than a page to recognize that you’re in the presence of someone who can write, but it only takes a sentence to know you’re dealing with someone who can’t.
(By the way, here’s a simple way to find out if you’re a writer. If you disagree with that statement, you’re not a writer. Because, you see, writers are also readers.)
Click here to read the whole piece (and link to the essay that started it all).