I been readin' 'bout how maybe they is planets peopled by folks with ad-vanced brains. On the other hand, maybe we got the most brains...maybe our intellects is the universe's most ad-vanced. Either way, it's a mighty soberin' thought.

The Honolulu Advertiser (20 June 1959), cited in "Pogo on intelligent life in the universe" by Garson O'Toole, in Archive of the American Dialect Society listserver (16 February 2017), and in 'Pogo Comic on Extraterrestrials: Either Way, It’s a Mighty Soberin’ Thought", The Quote Investigator (18 February 2017). This has often been paraphrased as: "Thar’s only two possibilities: Thar is life out there in the universe which is smarter than we are, or we’re the most intelligent life in the universe. Either way, it’s a mighty sobering thought."