Elixir, here's a few links I recommend you to read:
http://www.wikihow.com/Spot-a-Sociopathhttp://www.naturalnews.com/036112_sociopaths_cults_influence.htmlhttp://www.decision-making-confidence.com/sociopath-symptoms.htmlI also second Piff's advice to seek domestic violence counseling. This will provide you with some assistance, not only against Glass, but also in dealing with the police who seem to be content to do nothing, or almost nothing, instead of getting off their behinds. If Glass has a record of domestic violence, they should do some more than shrug it off and grab another donut, and getting counseling will also be helpful as you will learn how to put rockets up their bums. Also report Glass whenever he stalks you, no matter whether at home, at your job, following your car or whatever. Every time he does, he's violating court orders, so this needs to be documented with the police. If possible, don't leave home on your own - being able to present a witness for such incidents sounds like a good idea.
And don't assume he 'only' wants to talk to you about something - he's trying to control you (again). Leaving him, you commited a grave sin in his mind: you're trying to break away from his control, and he needs to re-establish that. He won't be content if you stopped and talked to him once - he wants permanent control. In fact, if you do stop and talk to him, this will be only the first time, the introduction to many more times. Plus that this may work against the court orders you obtained as it may be seen as if you were seeking the contact, not him. He's got court orders not to contact you or come near you - Period. If he follows your car, drive to the police station. If there's someone in the car, let them phone police, tell them he's stalking you right now and that you are headed for the station and make them watch out for his car following you. If he's leaving notes in your drive again, don't go out and pick them up - phone a friend, ask them to come to your house with a camera resp cellphone.