There is reason that all things are as they are, and did you see with my eyes and know with my knowledge, you would perhaps better understand.
Dracula uses a cool, teacherly tone to frame his restrictions as sensible order, not cruelty. The aphoristic wording sounds wise while quietly defending secrecy. By claiming special sight—“see with my eyes”—he sets up an authority gap that Jonathan can’t cross. It’s also social camouflage: “custom” and “reason” become covers for predation. Emotionally, the line soothes even as it narrows choices, which is why it chills after the fact. Readers feel how control can arrive as philosophy rather than force. The quote foreshadows how polite rules will trap a guest who thinks he is free.