Patrons such as popes and merchants supported Renaissance artists financially, allowing them to experiment with new artistic styles. This led to revolutionary changes in art including a shift away from solely religious themes and the development of realistic techniques like perspective. Writers also changed during this period, focusing on topics from everyday life and using new genres like satire and black humor rather than just poetry. Famous Renaissance artists included Michelangelo, Donatello, and Da Vinci while famous writers included Petrarch, Machiavelli, Dante, and Boccaccio.