This quote poetically portrays the concept of sadness as a barrier between different emotional states. "Sadness" represents a state of emotional distress. "Wall between two gardens" symbolizes the separation between happiness and sorrow.
The quote underscores the transient nature of emotions. It suggests that sadness is not a permanent state but a temporary obstacle that separates moments of joy and contentment. This view reflects the idea that emotional ups and downs are part of the human experience.
In essence, the quote speaks to the cyclical and transformative nature of emotions. It conveys the idea that sadness, like a wall, can be overcome or eventually lead to brighter emotional states. The quote encourages the perspective that moments of sorrow are part of the broader landscape of human emotions, separated from moments of happiness by this metaphorical "wall."