A classic novel by the mature Heinlein, conceived by him at the dawn of his writing career; The idea was presented by the equally young Isaac Asimov, and Heinlein realized it almost half a century later, inspired by the religious and philosophical satires of Voltaire and Mark Twain. So, meet Alex Hergensheimer. He flew to Polynesia on the airship "Graf von Zeppelin" and travels around the islands on the cruise ship "Konung Knut". Having agreed to participate in the ritual of walking on fire, Alex did not burn or get burned, only briefly lost consciousness. But why, when he woke up, did everyone call him "Mr. Graham"? Why does “Konung Knut” look completely different and why is there not a single airship in this world?..The translation is published in a new edition.