Socially, identity has become a complex and central phenomenon, and with it diversity itself has become one of the single most important issues for human development. To accommodate diversity, we have to come to terms with multiple and changing identities. What we define and describe as our constituent parts, say in Europe or in Asia, become an integral part of ourselves. It is not just that these parts coexist in communities, but their ideas, art, literature, food and lifestyles now play a central part in shaping both the communities and the individual. In best cases, the difference is evaporating; and we must adjust to this radical change.