Where Ignorance Is Bliss It Is Folly To Be Wise
It means that in cases where happiness lies on the side of ignorance, it would be folly to be wise. Ignorance is not bliss. Ignorance could be a cause of great loss; ignorance could be a cause of failure; ignorance could result in the defeat of the empire; and so many very drastic and dangerous consequences may be the result of ignorance.
But when knowing anything may result in unhappiness or something drastic, it is wrong to put effort into knowing that thing.
Adam tasted the forbidden fruit of the Tree of Knowledge and was thus expelled from the Garden of Eden. “He that increaseth knowledge increaseth sorrow” was the verdict of Solomon, and the experience of the ages has confirmed the truth of the verdict.