St. Paisios of Mount Athos | The devil doesn't want people to know that he exists

The devil doesn’t want people to know that he exists, because it’s easier for him to fight them if they’re unaware of his existence. You don’t protect yourself from an enemy unless you realize he exists. But once you’ve detected him, there’s no reason for him to hide, so he then fights you out in the open.

St. Paisios of Mount Athos