Who said "Concentration and hard work are the keys to success."?

This quote is attributed to Wilt Chamberlain.

Concentration and hard work are the keys to success. - Wilt Chamberlain

"Concentration and hard work are the keys to success."

Wilt Chamberlain Work

Professional Basketball Player American 1936–1999

"Nobody roots for Goliath."

"Be the best version of yourself, not the second best version of someone else."

"I am Wilt Chamberlain. Nobody has ever worked harder than me."

"Everybody pulls for David, nobody roots for Goliath."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."