Final answer:
Seward begins to change his opinion of Renfield in 'Dracula' as he notices Renfield's complex behavior and insights related to the novel's central supernatural events. The question appears to be based on a misunderstanding, as the referenced text is not from 'Dracula,' but the answer addresses the character dynamics in the correct novel.
Step-by-step explanation:
The fictional character Seward begins to change his opinion of Renfield in the classic novel 'Dracula' by Bram Stoker due to various pivotal moments that reveal Renfield's complexity and intelligence. This change does not directly relate to the provided passages which seem to be from 'Riders of the Purple Sage' by Zane Grey and not related to the 'Dracula' narrative. Since the student's question asks about 'Dracula,' there appears to be a mix-up in the provided references.
In the story of 'Dracula', Seward observes Renfield's behavior closely and starts to notice that there is more to Renfield than mere madness. Renfield's moments of clarity, his peculiar obsession with consuming life in the form of flies and spiders, and his knowledge of Dracula's true nature gradually shift Seward's perspective from viewing him as a mere patient to considering him as someone potentially important in understanding the dark happenings around them.