Sir Thomas More was an English lawyer, philosopher, and statesman who lived during the 16th century. He is best known for his work "Utopia," which describes an ideal society. More served as a key advisor to King Henry VIII and held various high-ranking positions in the government. He was also a devout Catholic and opposed the Protestant Reformation, which ultimately led to his execution for refusing to accept Henry VIII as the head of the Church of England. More is remembered for his intellect, moral integrity, and commitment to his principles, and he was later canonized as a saint by the Catholic Church.