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True navigation begins in the human heart. It's the most important map of all.

Civilization is a movement and not a condition, a voyage and not a harbor.

Neurologically, people have a need to feel oriented, to know where they are, not just in terms of a compass and not just in terms of geography, but in terms of their culture and history. To be informed about where they're coming from and to have some glimpse towards a hopeful future.

I think... the history of civilization is an attempt to codify, classify and categorize aspects of human nature that hardly lend themselves to that process.

Seeing sites and features in places where we never looked or never thought things might exist is causing archaeologists across the world to think deeper about their sites or entire cultures.

Certainly, travel is more than the seeing of sights; it is a change that goes on, deep and permanent, in the ideas of living.

Of course, mankind has made giant steps forward. However, what we know is really very, very little compared to what we still have to know.

I do not start with a full knowledge of the facts; the whole attraction of writing history is to educate myself: it is an exploration into the unknown - 'a journey without maps,' to borrow Graham Greene's phrase.

For centuries, cultures throughout the world have used indigenous technologies to navigate life's complexities. From navigator-priests in Micronesia to mystics in India, vast sums of knowledge are available if we but recognize it.