Who said "Hard work and dedication are the keys to advancement."?

This quote is attributed to Waylon Smithers.

Hard work and dedication are the keys to advancement. - Waylon Smithers

"Hard work and dedication are the keys to advancement."

Waylon Smithers Work

"Mr. Burns is a great man, and I would do anything for him."

"The key to success is hard work and dedication to your employer."

"I live for the moment when Mr. Burns needs me."

"Love is wonderful, but duty comes first."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."