Maurice A. Bigelow was an American educator and advocate for sex education, known for his progressive views on human sexuality in the early 20th century. He gained prominence through his influential work, 'Sex-Education: A Series of Lectures Concerning Knowledge of Sex in Its Relation to Human Life,' which aimed to provide comprehensive and candid information about sexual health and relationships. Bigelow's lectures were groundbreaking for their time, addressing topics that were often considered taboo and emphasizing the importance of understanding human sexuality as a vital aspect of life and education. Throughout his career, Bigelow championed the necessity of sex education in schools, arguing that it was essential for the well-being and moral development of young people. His work contributed to the broader movement for sexual reform and education in the United States, laying the groundwork for future discussions and curricula on the subject. Bigelow's legacy is marked by his commitment to fostering open dialogue about sexuality, which has had a lasting impact on educational practices and societal attitudes towards sex education.