He awoke—and wanted Mars. The valleys, he thought. What would it be like to trudge among them? Great and greater yet: the dream grew as he became fully conscious, the dream and the yearning. He could almost feel the enveloping presence of the other world, which only Government agents and high officials had seen. A clerk like himself? Not likely.
Novellete-length, this story is the inspiration behind the popular Total Recall movies from 1990 and 2012.