Who said "Motivation is temporary; discipline is permanent."?

This quote is attributed to Wilt Chamberlain.

Motivation is temporary; discipline is permanent. - Wilt Chamberlain

"Motivation is temporary; discipline is permanent."

Wilt Chamberlain Motivation

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."

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."