Originally published in 1921 as part of the Cambridge Plain Texts series, this volume contains the full version of La virtù sconosciuta by the renowned Italian literary figure Vittorio Alfieri (1749–1803). Derived from the Pisa edition of the Opere, Volume 4 and dated 1805, the text is presented in Italian with a short editorial introduction in English. This book will be of value to anyone with an interest in Alfieri and Italian literature.