To a person alive today it is hard to fathom that the ancient Greeks regarded themselves as living in an age of decline. These are the people who gave us the philosophers Socrates and Plato, the playwrights Sophocles and Euripides, the mathematician Pythagoras, the scientist and polymath Archimedes, and the first person to formulate atomic theory, Democritus. These are the people who designed and built the Parthenon and created the sculpture we so admire today in our museums. And yet, the ancient Greeks believed that the Golden Age , a period of unprecedented peace, prosperity, and cultural achievement, already lay deep in the past. A friend recently asked if we who are alive today could bear to live in such an age. Our modern lives are premised on the idea that tomorrow will not only be different, but also better. He said this attitude has made us inattentive. We feel we don't have to pay attention to the details of life because we know their destination in advance, namely, progre...