 What motivated the leprechauns to build a spaceship?
But its small, mischievous pilots had a rendezvous with destiny—on Earth. I had seen them first as a boy of eight, and then, very briefly again, on my tenth birthday. I smiled, and the foreman of the leprechauns—if that's what he was—saw me smile and became stiff and alert for a moment, as though suspecting that perhaps I actually could see him. Or so the legends affirmed, though I've wondered often about the truth of them. Of course it was a spaceship, or a miniature replica of one. I shook my head in wonder, then stepped back from the spaceship and looked about the glade.
 They believe that humans' obsession with technology will make the world inhabitable
 They desire to seek and add more riches to their already expansive collection  They believe that humans' obsession with technology will make the world inhabitable  They fear that their race will soon become extinct due to population decline  They wish to transport their riches to another location where humans will never steal it