Who said "Self-motivation is the only kind worth having."?

This quote is attributed to Zurg.

Self-motivation is the only kind worth having. - Zurg

"Self-motivation is the only kind worth having."

Zurg Motivation

"Fear is the most delicious emotion of all!"

"I didn't become Emperor by being timid."

"Power is not given—it is taken."

"Every great villain starts with a dream."

"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."