Who said "Believe in yourself and others will believe in you too."?

This quote is attributed to Ricky Ricardo.

Believe in yourself and others will believe in you too. - Ricky Ricardo

"Believe in yourself and others will believe in you too."

Ricky Ricardo Motivation

"Lucy, you got some 'splainin' to do!"

"I'm not angry, I'm just disappointed."

"Babalú!"

"This is going to be a great show!"

"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."