 She became committed to the Quaker principles of pacifism, equality of the races and sexes, economic and social justice, and international government.When the United States refused to join the League of Nations after the Great War, Oakley went to Geneva, Switzerland, and spent three years drawing portraits of the League's delegates which she published in her portfolio, "Law Triumphant" (Philadelphia, 1932).She was an early advocate of nuclear disarmament after World War II.