Who said "Duty calls, and we must answer."?

This quote is attributed to Zazu.

Duty calls, and we must answer. - Zazu

"Duty calls, and we must answer."

Zazu Motivation

"As majordomo, I am responsible for all the details of royal life."

"One must be prepared."

"You deliberately disobeyed me."

"I'm only a lion, not a monkey."

"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."