It's about not letting the internal enemy, the real enemy, have his way because the more he does the stronger he becomes. The film's about the devastating results that can manifest from the internal enemy being unbridled and allowed to unleash chaos. ↗
But Dr. Smith says, and I believe it to be a true state of the case, that he himself gave a course of Lectures in Natural Philosophy, during the same winter, and that the money raised by them was also applied towards paying for the Orrery. ↗