If the voices don't go away on medication, I would try doing therapy while on medication. I don't know how long you have been off your medication, but it is certainly concerning that you are feeling paranoid and believe the voices have a will of their own in that they are trying to tell you something. I understand your point about masking the problem with drugs, however, I think your condition is likely to deteriorate should you choose to stay off of your medication. I think your current clarity of thought is likely transient and will be subsumed by psychotic symptoms as time progresses.