"There's a saying - "Write what you know." It's bad advice if you take it as an unbreakable rule, but good advice if you use it as a foundation."

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There is a little bit of that schoolyard attitude of, it's one thing for a guy your own size to mouth off to you, but if there's a little guy, you should just smack him around. And it's probably bad advice in the schoolyard. It's certainly not a good way to run a foreign policy because even when you are dealing with a non-peer, militarily, war is complicated.

— Barack Obama