In 1877 Degas invited Mary Cassatt to exhibit in the third Impressionist exhibition. He had admired a portrait ("Ida") she exhibited in the Salon of 1874, and the two formed a friendship. They had much in common: they shared similar tastes in art and literature, came from affluent backgrounds, had studied painting in Italy, and both were independent, never marrying. Both regarded themselves as figure painters, and the art historian George Shackelford suggests they were influenced by the art critic Louis Edmond Duranty's appeal in his pamphlet "The New Painting" for a revitalization in figure painting: "Let us take leave of the stylized human body, which is treated like a vase. What we need is the characteristic modern person in his clothes, in the midst of his social surroundings, at home or out in the street."