Who said "I may be old-fashioned, but at least I got principles."?

This quote is attributed to Meathead.

I may be old-fashioned, but at least I got principles. - Meathead

"I may be old-fashioned, but at least I got principles."

Meathead

"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"