In this article, I map current conceptions of cosmopolitanism and sketch distinctions between the concept and humanism and multiculturalism. The differences mirror what I take to be a central motif of cosmopolitanism: the capacity to fuse reflective openness to the new with reflective loyalty to the known. This motif invites a reconsideration of the meaning of culture as well as of the relations between home and the world.In recent years research on cosmopolitanism has proliferated. The research is wide-ranging in focus and centered in many disciplines and interdisciplinary constellations. It is often agonistic: scholars in this spiraling field have sought to respond to charges that the idea implies naive utopianism, political aloofness, uncritical universalism, moral rootlessness, disguised ethnocentrism, and elitist aestheticism. These criticisms mirror the view that cosmopolitanism aspires to be too many things to too many people, and thus collapses under the weight of its overweening grasp. Rather than shedding helpful light on human concerns, the criticism goes, the concept produces intellectual cacophony and obscurity. Better to stick, on the one hand, with well-known concepts such as humanism and multiculturalism or, on the other hand, with new postmodern vocabularies that criticize the possibility of mutual understanding.Contemporary scholarship has not dissolved critiques of cosmopolitanism. However, it has engaged them seriously. The literature illuminates weaknesses, stereotypes and caricatures that characterize many views of cosmopolitanism. It has also clarified differences between cosmopolitanism and other global ''isms'' such as humanism and multiculturalism, and it has also made plain its critical distance from the phenomena known as