““Maybe you were better off not knowing.”
“Ignorance is not bliss.””

“If ignorance is bliss, then knock the smile off my face.”

“Ignorance was bliss.”

“If ignorance is bliss, then I’m a blister.”

“Ignorance is not bliss — it is oblivion. Determined ignorance is the hastiest kind of oblivion.”

“When ignorance is bliss, there's folly in wisdom.”

“They say ignorance is bliss…. they're wrong”

“If ignorance is bliss, then I'm in heaven now.”

“If knowledge is power, ignorance cannot be bliss.”

“[…] where ignorance is bliss,
'Tis folly to be wise.”