Who said "It's curtains for you, Dr. Hibbert!"?

This quote is attributed to Mr. Burns.

It's curtains for you, Dr. Hibbert! - Mr. Burns

"It's curtains for you, Dr. Hibbert!"

Mr. Burns Fear

"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!"

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."