Who are you? Where does the world come from?

Who are you?
She had no idea. She was Sophie Amundsen, of course, but who was that? She had not really figured out - yet.

Where does the world come from? it said.
For the first time in her life she felt it wasn't right to live in the world without at least inquiring where it came from.

Sophie's World, Jostein Gaarder

Dear Sarah,
I hope your travel back to Canada went well. You must be happy to be with your parents and friends again. Alex started this blog after we all returned home, what a great idea. We can keep in touch despite the distance between Europe and North America. I am glad I can take some rest from the science summer camp though I miss all of you.
In the bus taking us to Grenoble, you said how much you liked the Harry Potter's series. You were impatient to receive the last volume. I hope you are enjoying it. I have found the english title of my favourite book: 'Sophie's World'.
This best seller was written by a norwegian philosophy teacher named Jostein Gaarder. I cannot summarize this book. It is so much more than a history of philosophy. It is an extraordinary novel. Sophie is in many ways just as attaching a character as you are. You are about the same age - Sophie is fifteen years old. Maybe you could meet one day. Maybe the two of you have met already if some of the readers of 'Fun Science With Your Computer' have also read 'Sophie's World' - these readers may understand what I mean. This book had a profound influence on me. I decided I would study philosophy at university La Sorbonne. I particularly like epistemology. My copy of the book is in french - 'le monde de Sophie'. You will easily find the english version at your local bookstore. Do not skip the last chapters - they reveal important twists in the story...