Who said "Gratitude is a luxury we can no longer afford."?

This quote is attributed to Negan.

Gratitude is a luxury we can no longer afford. - Negan

"Gratitude is a luxury we can no longer afford."

Negan Gratitude

"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."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"