Valkit - Read recently "Hagakure" - Japanese practical and spiritual guidance of a warrior of the 17th century.
The samurai returned home late at night and he may have been roughly answered on the way from some house, he was upset and came home in a bad mood. My wife asked, “Why are you upset?” He replied, I don’t know if I did the right thing. I heard words that could be interpreted by me as an insult! Wife - if you already think about it - it means that the insult has happened, even if it wasn't, let's go and kill them all! They took their swords, went and killed everyone in that house... in the morning they were detained and they opened their stomachs, thus avoiding the possible dishonesty that may have been said when he was going home!