Worn with years, a lion pretended illness. Many beasts came for the purpose of visiting the sick king, whom at once he devoured. But a wary fox stood at a distance before the den, saluting the king. On the lion asking her why she did not come in: "Because," Said she, "I see many foot-marks of those who have gone in, but none of those who came out." 
The dangers of others are generally of advantage to the wary. 