"He was often as anti-impressionist as the critics who reviewed the shows", according to art historian Carol Armstrong; as Degas himself explained, "no art was ever less spontaneous than mine. What I do is the result of reflection and of the study of the great masters; of inspiration, spontaneity, temperament, I know nothing." Nonetheless, he is described more accurately as an Impressionist than as a member of any other movement. His scenes of Parisian life, his off-center compositions, his experiments with color and form, and his friendship with several key Impressionist artists—most notably Mary Cassatt and Édouard Manet—all relate him intimately to the Impressionist movement.