Eric Jarosinski (born 1971) is an American Germanist, author, humorist, and public speaker. Jarosinski writes under the nom de plume NeinQuarterly on the social networking site Twitter, where he writes linguistic, political, and philosophical aphorisms, keeping to the 140-character limit. Jarosinski writes in German, Dutch and English. He began tweeting in 2012 and soon had a significant following (with 150,000 followers as of 2017). He then made the jump to print with a weekly column in the leading German weekly Die Zeit (2014-present) and the Dutch daily NRC Handelsblad (2015-2016) Jarosinski's first book Nein. A Manifesto was released in 2015 and has been published in English, German, Spanish, Italian, Dutch, and Danish.