In The Longest Day in Japan, the borrowing of this sentence becomes an obvious metaphor, that is, rational people are driven away by crazy people and go to the abyss together.
The original intention is similar to the popular "not crazy and not happy". It means that a person or a group of people are crazy or devoted to something, thus inspiring the whole society and the world, or urging others to work in the same direction at the same time.
The source of this sentence comes from the humorous words of Qingyun Zong Wei, a monk in Datian Temple17th century.
The word dream interpreter was originally the title of mental illness in Edo period. It was formed by adding "きちがひ" to "crazy things" in peacetime, which translates into an extremely crazy/crazy guy.
References:
History of psychiatry (published by Koichi and Ichiro in 2005)
Influence on movies
This sentence in the film is a metaphor for what Japan did in World War II. Because a group of crazy and paranoid people participated too much, Japan finally introduced a dictator (such as Emperor Hirohito), which was finally regarded as the existence that should bear all the charges after failure. However, these crazy people and their influence have not been noticed, or even deliberately forgotten (see the thoughts, viewpoints and books of some Japanese militarists from the reform of natural forest protection to the Meiji Restoration and Taisho Democracy).
This may be understood as making excuses for the role of the emperor in the events at that time through these metaphors. It can also be understood as a reflection, that is, "carry forward the present without abandoning the past, and innovate without being conservative." But in any case, it also means that the crimes committed by Japan were allowed and completed by everyone from an era. Whether there is a follow-up inheritance and development is also a question worthy of self-vigilance and observation by others.
After all, throughout the history of the world, there are many examples of "crazy people (crazy people) driving away people who are not crazy (rational people)", and Hitler is also an example. This may mean that although human beings have spent enough time, they always repeat such development and results in different periods due to public expectations. Sometimes it may be a good thing at first, but more often it will only make people taste bitter fruit.
Class example
China's "The Analects of Confucius Lutz" asked the public two questions: "A word can prosper the country, what is it?" "I lost my country in a word, what else?"
There is a similar proverb in Japan, such as "one person prospers the world and one person dies" (one person prospers the country and one person dies).