Boccaccio, the three outstanding writers before the Renaissance: Petrarch, the father of humanism in decameron, first advocated restoring the view that "man is the most precious" put forward by ancient Greek thinkers, turned people's eyes from God to man, and advocated using "anthropology" to oppose "theology". It was under the guidance of humanism that he created a series of excellent poems. Songji, a lyric poem, is his best work, and his sonnets have a far-reaching influence on English poets in16th century. Dante is a famous poet in the early Italian Renaissance. Divine Comedy includes three parts: hell, purgatory and heaven. Leonardo da Vinci was the first of the three outstanding artists in the Renaissance. The Last Supper and Mona Lisa ranked second: Michelangelo's brilliant masterpieces were David and Moses ranked third: Raphael. Raphael has a title: Painting the Sistine Madonna. Shakespeare's plays Hamlet, Othello, King Lear and Macbeth are Shakespeare's "four tragedies". Merchant of Venice, Romeo and Juliet