Who said "Fear is often the greatest teacher in disguise."?

This quote is attributed to John Coltrane.

Fear is often the greatest teacher in disguise. - John Coltrane

"Fear is often the greatest teacher in disguise."

John Coltrane Fear

Jazz Saxophonist American 1926–1967

"A love supreme is a personal statement that comes from the heart."

"The moment we stop learning is the moment we stop growing."

"I want to be a force for real good in this world."

"Music is my life's purpose and my statement."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."