"私たちは身体は文明化されていても、魂は野蛮であるかもしれません。"

Simplified Meaning:

It's possible for people to look polite and well-mannered on the outside but still have cruel or selfish thoughts and feelings on the inside. Just because someone dresses nicely and follows social rules doesn't mean they are kind or compassionate. For example, imagine a businessman in a suit who looks very professional. He might donate money to charity and attend community events. However, if he treats his employees poorly, lies, or cheats to get ahead, his behavior shows that deep down, he isn't as good as he appears. This idea suggests that true civilization isn't just about how we look or act in public; it’s also about the goodness of our hearts and minds. To live sincerely by this advice, one should strive to be kind and ethical both inside and outside. Being truly civilized means being honest, compassionate, and fair to others, even when no one is watching.