Baber Johansen is a faculty associate of Harvard's Weatherhead Center for International Affairs and a member of its Executive Committee. His research and teaching focus on the relationship between religion and law in the classical and the modern Muslim world. His book Muhammad Husain Haikal Europa und der Orient im Weltbild eines ägyptischen Liberalen (1967), translated into Arabic in Abu Dhabi in 2010, examines twentieth-century liberal interpretations of Islam; Islam und Staat (1982) looks at modern Muslim debates on state models; and Islamic Law on Land Tax and Rent (1988) considers long-term changes in classical and postclassical legal doctrine. Contingency in a Sacred Law: Legal and Ethical Norms in the Muslim Fiqh (1999) focuses on law, social practice, and ethics in Islam. He is one of the three executive editors of Islamic Law and Society, and has served as area editor for Islamic Law in the Oxford Encyclopedia of Legal History (2009) and as adviser for the Encyclopedia of Law and Society (Sage, 2009).