Sasha Cagen is an American writer, editor, and entrepreneur and originator of the quirkyalone movement. Her first book was Quirkyalone: A Manifesto for Uncompromising Romantics (Harper, San Francisco, 2004), and her second book To-Do List: From Buying Milk to Finding a Soul Mate, What Our Lists Reveal About Us, a collection of 100 handwritten lists and the stories behind them, was released by Simon & Schuster in November 2007.