Since September 2001 the struggle between militantly radical and progressive or democratic tendencies—between “ungentle” and “gentle” Islam—has become a matter of urgent importance not only among Muslims but to others beyond their faith community. Some observers suggest that the course taken by this contest in Malaysia may be of more than local significance: because Malaysia has demonstrated singular success among Muslim-majority nations in achieving economic growth and the various worldly attainments associated with it; and because, in opposition to the new militant Islamism, its rulers have promoted and identified themselves with modern, progressive, and liberal forms of Islam. Islam Hadhari...