The vaunted clash of civilizations has grown into a Fourth World War of demonization against Islam. The newest strategy is to single out Islam’s essential values, deny that they exist, and assert that their absence constitutes the Islamic threat. This article shows the common identity of classical American and classical Islamic thought so that Muslims, Christians, and Jews can unite against religious extremism. Muslim jurisprudents developed the world’s most sophisticated code of human responsibilities and rights. This is now being revived as the common heritage of western civilization based on the premise that justice reflects a truth higher than man-made positivist law and on the corollary that the task of religion is to translate transcendent truth into the transcendent law of compassionate justice.