“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.”
“Man, if you have to ask what it [jazz] is, you’ll never know.”
“If you have to ask what jazz is you will never know." Louis Armstrong”
“You will never know what the meaning of Jazz is if ask what it means.”
“if you have to ask you'll never know”