BOSTROM, CHRISTOFFER JACOB (1797-1866), Swedish philosopher, was born at Pita'. Jan. 1, 1797, and died March 22, 1866, at Uppsala. He studied at Uppsala, where he was professor of practical philosophy from 1840 to 1863. His philosophy was a rational idealism, founded on the principle that the only reality is spiritual. From this he developed a political theory of the ideal state as a constitutional monarchy with willing and obedient subjects. See H. Hoffding, Filosofien i Sverig (1879), and History of Modern Philosophy (Eng. trans. 190o). Bostrom's works were edited by H. Edfelt (2 vols. Uppsala, 1883) .