How did Nicolas Poussin’s paintings show the classicist side of French Baroque art?

Nicolas Poussin played a pivotal role in establishing the French Classical tradition, serving as a primary counterpoint to the more theatrical and emotional impulses of the broader Baroque movement. His paintings exemplify the classicist side of French Baroque art through several key characteristics:12

• Rational and Cerebral Style: By the 1630s, Poussin rejected the "seductive" and vibrant qualities of Venetian art in favor of a severe, intellectual approach. He emphasized clearly delineated, modeled forms and used cold, pure colors rather than lush, vibrant brushwork.34
• Order and Composition: His compositions were rigorously organized, often arranging figures in a friezelike manner parallel to the picture plane, reminiscent of ancient relief sculpture. This structural clarity was supported by detailed preparatory drawings.4
• Narrative Clarity: Poussin’s history paintings were designed to be "read" by the viewer, with every figure and action contributing to a coherent, dramatic narrative. This intellectual depth earned him the title of "painter-philosopher," as he sought to encapsulate complex sequences of events into a single, static, and harmonious image.43
• Classical Inspiration: His work was deeply indebted to the Renaissance master Raphael and the art of antiquity, prioritizing line and logic over the color-focused approach of his contemporaries.342