In a frenzy, kicking his legs and moving his arms in a swimmer's breaststroke, he managed to fight toward the rod. The closer he got to it, the stronger the web of force became. He did not give up. If he did, he would be back where he had been and without enough strength to begin fighting again. It was not his nature to give up until all his strength had been expended.

Chapter 1 (p. 4) - The Riverworld series - To Your Scattered Bodies Go (1971)