Who said "Perseverance is the only true measure of greatness."?

This quote is attributed to Queen.

Perseverance is the only true measure of greatness. - Queen

"Perseverance is the only true measure of greatness."

Queen Perseverance

Rock Band British Born 1970 (age 56)

"I won't be a rock star. I will be a legend."

"The show must go on."

"I'm just a musical prostitute, my dear."

"I won't be fooled by romance."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."