Who said "Compassion isn't weakness; it's the highest strength"?

This quote is attributed to Meathead.

Compassion isn't weakness; it's the highest strength - Meathead

"Compassion isn't weakness; it's the highest strength"

Meathead Strength

"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"

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."