Who said "Motivation comes from within; nobody can give it to you."?

This quote is attributed to Vincent Vega.

Motivation comes from within; nobody can give it to you. - Vincent Vega

"Motivation comes from within; nobody can give it to you."

Vincent Vega Motivation

"I'm gonna go take a shit. When I come back, if the dope is still here, it ain't gonna mean nothing."

"You know what they call a Quarter Pounder with Cheese in Paris?"

"That ain't no joke. That's just the way it is."

"I'm gonna take a shower. When I come back, we'll talk about this some more."

"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."