A Clockwork Orange Manipulation Quotes

How we cite our quotes: Citations follow this format: (Part.Chapter.Paragraph)

Quote #7

Dr. Brodsky said to the audience: "Our subject is, you see, impelled towards the good by, paradoxically, being impelled towards evil. The intention to act violently is accompanied by strong feelings of physical distress. To counter these the subject has to switch to a diametrically opposed attitude. Any questions?" (2.7.12)

Here, Dr. Brodsky is explaining the mechanism for behavior modification/manipulation. But how in the world does Dr. Brodsky convince himself that it is natural for humans to choose to be nonviolent in order to avoid getting sick by thinking violent thoughts? How is that human? How can it be natural if your acts are dictated by fear or avoidance behavior?