The character reflects on the unpredictability of happiness, likening it to the arrival of swallows in spring. She understands that one cannot force happiness into existence; it may appear spontaneously or not at all. This perspective suggests that anticipation can often lead to disappointment, while a lack of expectation can bring unexpected joy.
This idea conveys a deeper meaning about the nature of happiness. When one learns to let go of rigid expectations, they may discover joy when least anticipated, even in difficult times. Such moments are akin to finding warmth in the cold depths of winter, illustrating that happiness is often a subtle, unforeseen gift rather than a demanded right.