My first ride around the world ended in 1977. Never in my wildest dreams did I imagine that I would be setting off on that same journey 24 years later.
Then I was already 46 years old. To do it at the age of 70 would have seemed impossible, but that is just what I've been doing.
This new adventure began in January of 2001. It took me the length of Africa, around the Americas, through New Zealand and Australia, and across Asia to Europe.
Why follow the same route that I took before? Because after 25 years I was still haunted by the memories of exotic places and wonderful people I might never see again, but most of all because it was a rare opportunity to see, close up, how the world has changed in a quarter of a century.
What I did not count on, of course, was how much the world would change while I was on the road.
As you follow my journey you will find out what nine-eleven looked like from Brazil, and you will get a different slant on how the new waves of war and terrorism affect the world.
All in all, it has been a stunning experience: always intriguing, not always comfortable, but charged with all manner of insights that have given me, I think, a privileged view of where we are all heading.