Who said "Perseverance in pursuit of power is the only virtue."?

This quote is attributed to Mr. Burns.

Perseverance in pursuit of power is the only virtue. - Mr. Burns

"Perseverance in pursuit of power is the only virtue."

Mr. Burns Perseverance

"Release the hounds!"

"I'm trying to be a better man, but it's exhausting."

"Money can be exchanged for goods and services."

"Smithers, release the robotic Richard Simmons!"

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."