While still in high school, Natsir became involved in journalism. In 1929 he wrote two articles published in the "Algemeen Indische Dagblad", entitled "Qur'an en Evangelie" ("The Quran and the Evangelicals") and "Muhammad als Profeet" ("Muhammad as the Prophet"). He also collaborated with other thinkers to publish the newspaper "Pembela Islam" ("Defenders of Islam") from 1929 to 1935, and wrote extensively about his views on the religion for "Pandji Islam" ("Banner of Islam"), "Pedoman Masyarakat" ("Guide for the People"), and "Al-Manār" ("The Torch"). Aside from writing, Natsir founded Pendidikan Islam (Islamic Education), a private school, in 1930; the school was shut down after the Japanese occupation of Indonesia.