Nicolas Poussin (June 15, 1594-November 19, 1665) was an important French painter of the Baroque period in the 17th century. "The Shepherd of Alkadi" is his masterpiece. It is often referred to simply as Pousan.

Born in Les Andelys, Normandy, France, he was a descendant of aristocrats; when he was young, he learned from two painters, Quentin Varin and Jouvenet. He had been to Paris and was deeply influenced by Raphael's classical painting style. In 1621, he painted murals for the Luxembourg Palace and made several friends, namely the painter Philipp de Champagne and the Italian poet Marino. Knight.

In 1630, at the age of 29, Poussin moved to Rome, Italy, and began to have a strong interest in Renaissance paintings in Italy, which indirectly influenced his classicist style. His masterpiece "The Shepherd of Alkadi" was painted at this time. He returned to Paris briefly in 1640 and painted many paintings for the then King Louis XIII.

After Poussin's death in 1665, a faction known as the "Poussin Doctrine" emerged in the French painting community in recognition of his focus on Renaissance painting. Drawing is more important than color.

Comments: Impressionism is a reaction to Poussaint doctrine.