There are two basic kinds of fools—the ones who know they are fools, and the kind that, because they do not know that, are utterly deadly menaces! The mountain was spinning. Not dizzily, not even rapidly, but very perceptibly, the great mass of jagged rock was turning on its axis. Captain St. Simon scowled at it. "By damn, Jules," he said, "if you can see 'em spinning, it's too damn fast!" He expected no answer, and got none. He tapped the drive pedal gently with his right foot, his gaze shiftin