Few concepts have come to dominate the human sciences as much as modernity, yet there is very little agreement over what the term actually means. Every aspect of contemporary human reality--modern society, modern life, modern times, modern art, modern science, modern music, the modern world--has been cited as a part of modernity's distinctive and all-embracing presence. But what is the exact nature of the reality to which the term modern refers? Has not such a promiscuous, ill-defined concept come to obscure and confuse rather than clarify a genuine understanding of our...