“You don't know if something' going to suit you until you put it on.”
“Don't ever take a fence down until you know the reason it was put up.”
“Don't ever take a fence down until you know why it was put up.”
“Sometimes you don't know if something is worth it at the beginning, you won't recognize it until the time comes.”
“They say you don't know what you don't know until you know that you don't know it.”
“you don't know until you know!”