Who said "You gotta believe in yourself, 'cause if you don't, who will?"?

This quote is attributed to Frylock.

You gotta believe in yourself, 'cause if you don't, who will... - Frylock

"You gotta believe in yourself, 'cause if you don't, who will?"

Frylock Motivation

"I'm the leader of this group, and I make the decisions around here."

"You gotta have a plan, man. Life don't work without a plan."

"We're a family, whether you like it or not."

"Knowledge is power, but common sense is more valuable."

"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."