In places like Uruk and Eridu in modern-day Iraq, humans founded the first cities nearly 6,000 years ago. They left us literature, astronomy, and mathematics, as well as lessons in overpopulation and environmental stewardship.

Beginning 5,000 years ago, the "Land of the Seven Rivers" cultivated a tradition of nonviolence, renunciation of the material world, and a focus on humans' inner life. Today, these ideas survive in tension with the vestiges of Western colonialism.

With great thinkers such as Confucius and Lao-Tzu, the Chinese conceived a civilization reflecting cosmic harmony, sustained by civic and social virtue, ancient ritual, and reverence for ancestors.

In the world's first great nation, the annual flooding of the Nile conferred not only fertility, but also a deep respect for social and cosmic stability, a belief in the resurrection of the dead, and the hope of eternal life.

Independent of great civilizations elsewhere, the Maya and Aztecs developed a violent, fatalistic culture, envisioning a cosmos that required bloody sacrifice for renewal. It placed the sovereignty of nature above all else - even human life.

Now adopted nearly all over the globe, the modern Western ideas of individualism, property, and purposeful history trace their roots to Christianity, Greco-Roman humanism, and Germanic social values.