句子使用了比较级结构 'more dangerous than'，强调了谄媚之人的潜在危害超过敌人。
A fool who is excessively obsequious is more dangerous than any enemy. — Krylov
The most painful thing between people is to suffer annoyance and harm in a place where one believes they should receive goodwill and friendship. — Rabelais
The friendship of the wicked turns instantly into fear; fear breeds mutual hatred, and the result of hatred is that one or both parties meet with the death or ruin they have deserved. — Shakespeare
Friendship is pure like the morning mist; it cannot be obtained through mere courtesy, but only consolidated by loyalty. — Marx
Love is a synonym for friendship and a reliable guarantee for our struggle for a common cause. Love is a good companion in life, and you share a bed with your beloved woman because a common ideal tightly binds two hearts together. — Faraday
Rivers and mountains are not worth much; what matters is meeting a true soulmate. — Bao Rong
Those who become friends with you for profit will also break off with you for profit. — Anonymous
A true friend never changes his heart. — J. McTague
Liking a small group of like-minded friends in society is a fundamental principle of human social nature. — Edmund Burke
Grudge will eventually vanish, but friendship will last forever. — Cicero
Associating with the unwise inevitably leads to love and hatred. — Meng Jiao
Friendship is like marriage; its maintenance depends on avoiding unforgivable acts. — USA
殷勤过分的蠢才比任何敌人还要危险。——克雷洛夫
人和人之间，最痛心的事莫过于在你认为理应获得善意和友谊的地方，却遭受了烦扰和损害。——拉伯雷
恶人的友谊一下子就会变成恐惧，恐惧会引起彼此憎恨，憎恨的结果，总有一方或双方得到咎有应得的死亡或祸根。——莎士比亚
友谊像清晨的雾一样纯洁，奉诚并不能得到它，友谊只能用忠实去巩固。——马克思
爱情既是友谊的代名词，又是我们为共同的事业而奋斗的可靠保证，爱情是人生的良伴，你和心爱的女子同床共眠是因为共同的理想把两颗心紧紧系在一起。——法拉第
山河不足重，重在遇知已。——鲍溶
因为有利可图才与你结为朋友的人，也会因为有利可图而与你绝交。——佚名
真正的朋友永远不会变心。——乔·麦克唐纳
喜欢社会中一小群志同道合的朋友，这是人的社会属性的基本原则。——埃德蒙?伯克
仇恨终将泯灭，友谊万古长青。——西塞罗
结交非贤者，难免生爱憎。——孟郊
友谊像婚姻一样，其维持有赖于避免不可宽恕的事情。——美国