"First things first is learning something about demons in general. The single most important thing when dealing with demons is to always be completely sure of what you are working with. The more you know, the less likely you are to mess things up." Jasper didn't go and take a seat. Instead, he stood in front of her at a few paces distance, somewhat similar to a lecturer except that the room was much smaller and it was a crowd of one. Also, the furniture was more comfy. "Demons are unholy manifestation of human insanity. Not shrieking mad insanity, but the mental imbalances that can hide in more or less anyone without it being clearly visible. Back in the day, everyone, even warlocks, thought they were about the so called 7 deadly sins, because the most common demons can be tied, if somewhat loosely, to those and it makes thematic sense. The all time classic of succubi, formerly considered demons of Lust, are actually manifestations of a range of sexual disorders."