In the fatal course of the most painful ailments, sometimes {…}, sometimes there occur sweet mornings of perfect repose- and that not owning to some blessed pill or potion {…} or at least without our knowing that the loving hand of despair slipped us the drug.
The quote highlights the duality of suffering and relief in the experience of pain. It suggests that even in the most agonizing conditions, there can still be moments of serene calm. These instances of respite are not necessarily the result of medical interventions but may instead stem from an inexplicable grace or intervention beyond our understanding.
Nabokov's reflection on the nature of suffering points to the unpredictability of healing. The idea of a "loving hand of despair" implies that acceptance and understanding of pain can bring about unexpected comfort, blurring the line between anguish and tranquility. Such contrasts encourage a deeper contemplation of the human experience.