It is the suffering of ambivalence: the murderous alternation between bitter resentment and raw-edged nerves, and blissful gratification and tenderness
Physical comforts cannot subdue mental suffering, and if we look closely, we can see that those who have many possessions are not necessarily happy. In fact, being wealthy often brings even more anxiety.
You evidently do not suffer from "quotation-hunger" as I do! I get all the dictionaries of quotations I can meet with, as I always want to know where a quotation comes from.