恩格斯《馬克思悼詞》中說，

I make bold to say that, though he may have had many opponents, he had hardly one personal enemy.（我敢大膽地說，他有過許多反對者，但幾乎沒有一個私敵。）

我反用這話評價毛： Mao has had many opponents, they were all his personal enemies! (他有過許多反對者，他們都是他的私敵！)