Who said "The working class is the foundation of society"?

This quote is attributed to Meathead.

The working class is the foundation of society - Meathead

"The working class is the foundation of society"

Meathead Work

"You gotta understand the dialectical materialism of the situation, Archie"

"Love is a beautiful thing, man, it's like the revolution of the heart"

"Education is the key to enlightenment and social change"

"Peace will come when we stop perpetuating the military-industrial complex"

"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."