"Two years ago, in The World on Wheels, I told the story of a boy who wanted to see the world and was ready to undertake the greatest adventure in his life. Now I'm not a boy any more and things have changed: I'm studying philosophy (well, I've enrolled on a course), I don't always travel alone… but I remain convinced that, in this life, you shouldn't waste even a single instant of happiness. My desire to see the world has also stayed with me and has led me to travel through three continents: South America, Africa and Asia. I've had two extremely happy years, full of adventures and new experiences. And I can't just leave all that in my memories. For that reason, I've decided that the time has come for you to hear from that madcap boy with blue hair and a wheelchair." Albert Casals.