[140] so very uncertain is fortune on either side, whether for good or evil; and human affairs are as it were, weighed in a scale, being lightened or depressed according as the weights in each scale are unequal. And a terrible indistinctness and dense darkness is spread over human affairs. And we wander about as if in a deep sleep, without being able to arrive at anything with perfect accuracy of reasoning, or to seize hold of anything with a firm and retentive grasp; for all things are like shadows and phantoms.