There is a story told of an old farmer living in medieval China who only owned one ailing horse, and then one day his only horse ran away.  His neighbors said to him, “What bad luck!” And the farmer replied, “Good luck, bad luck, who knows?”

Several days later his sickly horse returned, bringing a dozen strong, healthy, wild horses with him.  The farmer’s neighbors exclaimed, “What wonderful luck!” And again, the farmer answered, “Good luck, bad luck, who knows?” Read more