James Joyce was an influential Irish novelist and modernist writer, best known for his groundbreaking works that explored the complexities of human consciousness and experience. His innovative narrative techniques, particularly stream-of-consciousness, transformed the literary landscape in the early 20th century, aligning with major artistic and literary movements of the time. Joyce's most famous works, including 'Ulysses' and 'A Portrait of the Artist as a Young Man', are celebrated for their deep psychological insights and rich language, reflecting cultural and social changes during the 1920s.