Who said "The dead don't stay dead. That's the lesson."?

This quote is attributed to Negan.

The dead don't stay dead. That's the lesson. - Negan

"The dead don't stay dead. That's the lesson."

Negan Knowledge

"I am the eeny, meeny, miny, moe of the apocalypse."

"You don't have to be afraid anymore. Not of me. Not of anything."

"I don't kill women. It's not in my rules."

"I'm gonna take what I want, and I'm gonna make it mine."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."