"常識は私たちを征服しようと努めてきた力が私たちを守るには最も不適切であることを教えてくれます"

Simplified Meaning:

Imagine you’re in a situation where someone is treating you badly and trying to take advantage of you. It wouldn't make sense to then rely on that same person to protect or help you. This is the idea behind the quote. Let’s consider an example from history: American colonists during the Revolutionary War felt that the British government was trying to control and oppress them. It would have been unreasonable for the colonists to trust the British to protect their freedoms and rights, because the British were the ones imposing unfair rules and taxes. In simpler terms, if someone is trying to harm you, they are not the right person to keep you safe. If applied to your life, always be cautious about relying on those who have shown they don't have your best interests at heart. Choose your allies and protectors from people who genuinely care about and support you.