Magic is a mystery, and disturbs most people. After all, who wouldn't be worried by something so arbitrary? However, the following is pretty clear:
All magicians can make illusions easily. Those are insubstantial, but can be worrying anyway, especially if you can't tell that they're illusions.
Real names are important to sorcerors. They'll never let anyone know their real names, and most people won't risk letting a wizard know their name. Since you can't tell who's a wizard, most people go by nicknames.
A wizard is capable of pretty much anything he wants to do. The only real difference is that a more powerful wizard can do it faster.
All wizards agree that while you can draw power from killing, you shouldn't, because it's extraordinarily harmful morally and besides, there aren't enough people to go around.
