“if you have to ask you'll never know”
“If you have to ask what jazz is, you'll never know.”
“What is Jazz? Dude, if you have to ask, you'll never know.”
“You never know how much time you'll have.”
“If you don't have a target-you'll never know if you have a hit or a miss!”
“If you have to ask, you’ll never know. If you know, you need only ask.”