"Reading at meals is considered rude in polite society, but if you expect to succeed as a writer, rudeness should be the second-to-least of your concerns. The least of all should be polite society and what it expects. If you intend to write as truthfully as you can, your days as a member of polite society are numbered, anyway."
"I don’t know the origin of the “write what you know” logic. A lot of folks attribute it to Hemingway, but what I find is his having said this: “From all things that you know and all those you cannot know, you make something through your invention that is not a representation but a whole new thing truer than anything true and alive.” If this is the logic’s origin, then maybe what’s happened is akin to that old game called Telephone. In the game, one kid whispers a message to a second kid and then that kid whispers it to a third and so on, until the message circles the room and returns to the first kid. The message is always altered, minimized, and corrupted by translation. “Bill is smart to sit in the grass” becomes “Bill is a smart-ass.” A similar transmission problem undermines the logic of writing what you know and, ironically, Hemingway may have been arguing against it all along. The very act of committing an experience to the page is necessarily an act of reduction, and regardless of craft or skill, vision or voice, the result is a story beholden to and inevitably eclipsed by source material."
Don’t Write What You Know
Why fiction’s narrative and emotional integrity will always transcend the literal truth
(A wonderful article, particularly for beginning writers, filled with true things. Go and read it at http://www.theatlantic.com/magazine/archive/2011/08/don-rsquo-t-write-what-you-know/8576/)