Who said "Loyalty can be purchased; friendship cannot be trusted."?

This quote is attributed to Mr. Burns.

Loyalty can be purchased; friendship cannot be trusted. - Mr. Burns

"Loyalty can be purchased; friendship cannot be trusted."

Mr. Burns Friendship

"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!"

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."