There is, so far, no better or more mature book on moral cosmopolitanism than Appiah's Cosmopolitanism: Ethics in a World of Strangers. In it, Appiah makes plain, by well-crafted appeals to the reader's good sense that are replete with ethnographic examples and real-world insights, what romantics and theologians have been telling us for ages: There is but a hair's breadth of difference between us; a tiny space that we can fill with causes for consternation and hatred, or with salutary joy at considering that difference. This Appiah does without in any way suggesting that there can ever be an end to the moral and cultural tensions that those differences do and must invite. He sketches the tenable cosmopolitanism we have been waiting for, and he parts company with the sentimentalist versions that remain - and should remain - in the shallow end of the pool.
Appiah, here as elsewhere (The Ethics of Identity), marvels that so many intellectuals have distorted the truth about the key insights of cosmopolitans, and he takes them to task. These have argued that cosmopolitanism contains an incredible and/or dangerous set of normative proposals and disregards the "facts" of human nature (that we are an insular species, with a territoriality that is red in tooth and claw). Appiah deftly replies that it is the cultural conservative, the jejune jingoist or nationalist, the duped hyper-contextualist, whose view of the world and of human nature is distorted, for the history of human social, cultural and even sexual intercourse is replete with cross-pollinations of language, religion, art, dress, rites, metaphysical outlooks, and progeny, all bespeaking an enormous aptitude for cooperation, bonding and friendship. We are an inter-cultural, intertwined, and interdependent species, just like every other on the planet. The view of ourselves as culturally isolated is the view that bears the burden of proof. It is, in fact, demonstrably false.
Appiah laments that so many philosophers and intellectuals, adopting a bad historicism, have argued, falsely, that we humans can only see the world up to the point of our own contextual "walls." He joins many - George Lakoff, Martha Nussbaum, William Sloane Coffin, Mohandis K. Gandhi, R.W. Emerson - in arguing that the greater truth of our humanity is our ability to imaginatively think new thoughts, to reconsider plans of life, to fashion new worlds of possibility, while acknowledging that each of us has a home that we should cherish, improve, perfect, and defend.
However, I in turn lament that this volume has failed to address what continues to go missing in normative literature - the role of love in moral imagination. For it seems to me that it is love - a word we are so often afraid to use in our secular and public discourse - that has the most power to make proper use of that hair's breadth of difference that we often find so important, that we are so ready to murder and maim for - where we, sometimes and lamentably, lend credence to those who would see us as best understood as having natures that are red in tooth and claw. I would like Professor Appiah to consider this a challenge, a challenge to write one more book to overcome what I perceive as this volume's single, but important, failing. I make this challenge because, once this failing is remedied, his body of work will have provided us with a full circle of mature cosmopolitan thought in the contemporary world.