Albrecht Dürer was a prominent German Renaissance painter, printmaker, and theorist active in the late 15th and early 16th centuries who helped introduce classical motifs to Northern art through his knowledge of Italian artists. He established his reputation across Europe in his twenties through his high-quality woodcut prints. Dürer's body of work includes engravings, altarpieces, portraits, watercolors, and theoretical treatises involving principles of mathematics, perspective, and proportions.