Who said "I've made patience my enemy and cruelty my friend."?

This quote is attributed to Mr. Burns.

I've made patience my enemy and cruelty my friend. - Mr. Burns

"I've made patience my enemy and cruelty my friend."

Mr. Burns Patience

"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!"

"Patience is a virtue I'm still learning."

"I may be a redhead, but I'm not a hothead."

"Patience is a virtue."

"Patience is a virtue I never learned."