Italian literature is written in the Italian language, particularly within Italy. It may also refer to literature written by Italians or in Italy in other languages spoken in Italy, often languages that are closely related to modern Italian. An early example of Italian literature is the tradition of vernacular lyric poetry performed in Occitan, which reached Italy by the end of the 12th century. In 1230, the Sicilian School is notable for being the first style in standard Italian. Dante Alighieri, one of the greatest of Italian poets, is notable for his Divine Comedy. Petrarch did classical research and wrote lyric poetry. Renaissance humanism developed during the 14th and the beginning of the 15th centuries. Humanists sought to create a citizenry able to speak and write with eloquence and clarity. Early humanists, such as Petrarch, were great collectors of antique manuscripts. Lorenzo de Medici shows the influence of Florence on the Renaissance. Leonardo da Vinci wrote a treatise on painting. The development of the drama in the 15th century was very great. The fundamental characteristic of the era following Renaissance is that it perfected the Italian character of its language. Niccolò Machiavelli and Francesco Guicciardini were the chief originators of the science of history. Pietro Bembo was an influential figure in the development of the Italian language and an influence on the 16th-century revival of interest in the works of Petrarch.
In 1690 the Academy of Arcadia was instituted with the goal of "restoring" literature by imitating the simplicity of the ancient shepherds with sonnets, madrigals, canzonette and blank verse. In the 17th century, some strong and independent thinkers, such as Bernardino Telesio, Lucilio Vanini, Bruno and Campanella turned philosophical inquiry into fresh channels, and opened the way for the scientific conquests of Galileo Galilei, who is notable both for his scientific discoveries and his writing. In the 18th century, the political condition of Italy began to improve, and philosophers throughout Europe in the period known as The Enlightenment. Apostolo Zeno and Metastasio are two of the notable figures of the age. Carlo Goldoni, a Venetian, created the comedy of character. The leading figure of the literary revival of the 18th century was Giuseppe Parini.