Henry James was a 19th-century American writer widely recognized for his contribution to fiction literature and considered one of the masters of psychological realism. His works explore themes such as human psychology, morality, and tensions between different cultures and societies. Some of his most well-known novels include "The Portrait of a Lady," "Washington Square," and "The Wings of the Dove." His detailed narrative style and his ability to capture the complexity of characters have left a lasting mark on literature.