Ki-taek: Rich people are naive. No resentments. No creases on them.
Chung-sook, Ki-taek's wife: It all gets ironed out. Money is an iron. Those creases all get smoothed out by money.
Ki-taek: They are rich but still nice.
Chung-sook, Ki-taek's wife: They are nice because they are rich.
Moon-gwang: Want to come down with me?
Chung-sook, Ki-taek's wife: If I had all this I would be kinder.