Theodore Dreiser, an influential figure in American literature, was born on August 27, 1871, in Terre Haute, Indiana. He was the ninth of ten children in a German immigrant family. Dreiser's early life was marked by financial instability and a tumultuous household, which profoundly shaped his worldview and literary themes. He faced many challenges growing up, including poverty and a lack of formal education, but these experiences would later inform his writing and his exploration of the human condition.

Dreiser’s literary career began in journalism, where he worked for various newspapers in Chicago and New York City. His first novel, "Sister Carrie," published in 1900, was a groundbreaking work that delved into the struggles of a young woman seeking her place in society. Initially met with criticism and controversy, the novel later gained recognition for its realistic portrayal of life and its critique of societal norms. This work established Dreiser as a key figure in the naturalist movement, which sought to depict life with unflinching realism, often focusing on the darker aspects of human experience.

Throughout his career, Dreiser authored several notable works, including "Jennie Gerhardt" (1911), "The Financier" (1912), and "An American Tragedy" (1925), the latter being considered one of his masterpieces. "An American Tragedy" explores the themes of ambition, morality, and the American Dream, reflecting Dreiser's fascination with the complexities of human nature and societal pressures.

In his personal life, Dreiser was known for his unconventional relationships and passionate nature. He married Sara Osborne in 1898, but their marriage was tumultuous and ended in divorce. He later had several significant relationships, including a long-term partnership with actress Helen Richardson. Dreiser's experiences and the relationships he fostered often influenced his writing, as he grappled with the complexities of love, desire, and ambition.

Theodore Dreiser passed away on December 28, 1945, in Hollywood, California. His legacy endures through his contributions to American literature, particularly in the realm of realism and naturalism. His works continue to resonate with readers, reflecting the struggles and aspirations of individuals in a rapidly changing society.