The evil one hates caution. Not only can he not bear the sound of it, he hates even the very echo of it; the mere mention of caution. For example, if a man proposes to do something, he enquires whether it is profitable before he forms an opinion on whether or not it is the enemy who suggests it, on whether he keeps to what he hears or not (that is what the devil utterly hates); he asks someone else and listens to what those who have to share his life have to say about it. The very sound, the mere echo of such discourse the devil hates and flees away from. And why do I say this? Because the devil knows that his malice is brought to light through this enquiry and discussion about the advantage of doing a thing, and there is nothing he hates and fears so much as to be known, because then he finds himself unable to lay snares as he wishes.
—St. Dorotheos of Gaza