A traitor undermines the foundations of society.
乌鸦和羊
The Crow and the Sheep
一只讨厌的乌鸦赖在羊背上不走。羊非常不情愿地带着她走了很长一段路，实在忍受不住了，就对乌鸦说：“如果你站在狗背上，早就尝到锐利牙齿的厉害了。”乌鸦听了之后回答说：“我看不起弱者，屈从于强者。我知道应该奉承谁，可以欺负谁。这也正是我延长生命一直到老的手段。”
学会选择你的敌人。
A troublesome Crow seated herself on the back of a Sheep. The Sheep，much against his will，carried her backward and forward for a long time，and at last said，“If you had treated a dog in this way，you would have had your deserts from his sharp teeth.” To this the Crow replied，“I despise the weak and yield to the strong. I know whom I may bully and whom I must flatter；and I thus prolong my life to a good old age.”