Eleanor Roosevelt championed notable principles such as human rights, social justice, and women's equality later in her life. As the First Lady of the United States and a key figure in the UN, she played a pivotal role in the drafting of the Universal Declaration of Human Rights. Her advocacy focused on improving working conditions, promoting education, and addressing the needs of marginalized communities. Roosevelt's commitment to civil rights and her belief in the potential of individuals to effect change underscored much of her work, making her an enduring symbol of social progress and activism.