Who said "One cannot be both a friend and a leader."?

This quote is attributed to Chief Skinner.

One cannot be both a friend and a leader. - Chief Skinner

"One cannot be both a friend and a leader."

Chief Skinner Leadership

"I own this restaurant. I decide what gets served here."

"This is MY restaurant, and I won't have it destroyed by a rat and a garbage boy."

"The health inspector is coming. We need perfection."

"Linguini is my employee, not a chef."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"