He flew unaccompanied from Copenhagen to Auckland.
He has seen the pyramids of Egypt, the Blue Mosque in Istanbul, the mountains of Serbia and the cities of Israel.
He has tramped Lake Waikaremoana, dug in the sand at Hot Water Beach, caught maomao and swum with dolphins.
He described a baby blackbird being fed by the father until it was strong enough to fly away.
He taught us some Danish words and showed us how to suck sweet nectar from a flower in our garden.
He made sandwiches for his lunch and squeezed grapefruit for juice.
Alexander gives me hope for the world.