As for the sentence in the title, as far as I know, the original text of this sentence is what Churchill said: "A country has no permanent enemies, no permanent friends, only permanent interests" (A nation has no permanent enemies and no permanent friends, only permanent interests), some people say that a British writer said this sentence earlier than Churchill, but it does not matter who said it first, the most important thing is that this sentence is It is used to describe the relationship between countries in the international community, rather than the relationship between people. If someone uses it to describe the relationship between people, it is obviously taken out of context, and the conclusion drawn is definitely wrong. .