The quote suggests a connection between intelligence and sadness. "Sadness is caused by intelligence" implies that a deeper understanding of certain things can lead to melancholy. It highlights that knowledge can sometimes be burdensome, as it brings awareness of difficult truths.
The quote underscores the emotional toll of comprehension. It reflects the complexity of emotions when one gains insight into challenging or painful aspects of life. "Wish you didn't understand them" signifies the yearning for ignorance or blissful unawareness to avoid the emotional weight of knowledge.
In essence, the quote speaks to the emotional consequences of awareness. It emphasizes the cognitive and emotional aspects of intelligence, highlighting that understanding can lead to a range of emotions, including sadness. The quote reflects the intricate relationship between intellect and emotional well-being, suggesting that sometimes, ignorance truly is bliss.