Christopher Hitchens (post inspired by this post at MetroDad)
I strongly concur on the lobster issue.
Backstory of this quote: I used to run a politics/culture roundtable called The Christopher Hitchens Drinking Club and promoted it on my pre-Gawker personal blog. It had nothing to do with Hitchens, actually, and was just predicated on the Babylonian tradition of debating things twice—once sober and once drunk. But I wrote a bit about Hitchens on my blog, and it caught the attention of the guy who runs his unofficial website. I asked him if he had ever met Hitchens and he said yes, once, in a bar (naturally.) And he said the most memorable part of it was something Hitchens told him—the quote above. So with his permission, I published it. Funny to see it still floating around.
Update: I totally forgot, but I actually used this is an essay once.