Nambara Shigeru was a rara avis of Japanese liberal academics at hard times in that he survived difficult times without being punished by the oppressive government in the pre-war Japan and the occupation authorities in the immediate post-war Japan. He specialized in Western political philosophy especially in Immanuel Kant and Johann Gottlieb Fichte, known as proponents of German idealism and nationalism. His magnum opus was published, without being punished, in 1944, arguing that the Nazi politics was totally against the Western political tradition. In 1945–46, he made clear his opposition to the draft new Constitution in which the emperor be symbolic and the armed forces be abolished. In 1949–1950, he made clear his view that Japan, once Japan admitted to the United Nations, what would become Japanese Self-Defense Forces should donate portions to what would become United Nations Peace Keeping Operations. On the basis of his writings in the war period and the occupation period, comparisons of his positions with Roger Scruton, Vladislav Surkov, Yanaihara Tadao, Akamatsu Kaname, Nitobe Inazo, and Yanagida Kunio on such concepts as democracy promotion, national self-determination, peace keeping are attempted to see the extent to which the pent-up Wilsonian moment burst in the immediate post-war period.