“They say you don't know what you don't know until you know that you don't know it.”
“You don't know what you don't know until someone who knows tells you about it. That's when you know that there's more to know than you'll ever know.”
“You never know what they mean until you hear what they don't say.”
“Ish #177 "You never know what you don't know, until you finally know it.”
“you don't know until you know!”
“Sometimes you don't know it. What you have been waiting your whole life for. You don't know until it is happening.”