"魔鬼所施展的最大诡计就是让世人相信他不存在"

Simplified Meaning:

This quote is talking about how the most powerful way to deceive someone is to make them think there is no danger or threat. Imagine if a thief convinces everyone in town that burglars don’t exist. People would leave their doors unlocked, making it easy for the thief to steal. By pretending not to be real, a threat can operate without anyone trying to stop it because they don’t believe it’s there. In real life, think about how sometimes people can be very manipulative or dishonest but pretend to be trustworthy. If everyone thinks they are a good person, they can get away with bad things because no one suspects them. This quote tells us to be careful and not take everything at face value. To apply this idea, you should stay aware of the possibilities around you and not be easily convinced by appearances. It advises being cautious and critical, checking the truth even when everyone says there’s no danger. In this way, you can protect yourself better and not be tricked by something harmful pretending to be harmless.