Joseph Addison, Cato, A Tragedy (1713), Act IV, scene i; the last line has often been misreported as "He who hesitates is lost", a sentiment inspired by it but not penned by Addison, as reported in They Never Said It: A Book of Fake Quotes, Misquotes, & Misleading Attributions (1989) by Paul F. Boller, Jr. and John George, p. 3.https://en.wikiquote.org/wiki/Heart