Who said "The dead, they don't feel pain or fear. They just consume."?

This quote is attributed to Rick Grimes.

The dead, they don't feel pain or fear. They just consume. - Rick Grimes

"The dead, they don't feel pain or fear. They just consume."

Rick Grimes Death

"We are the walking dead."

"This is not a democracy anymore."

"We don't kill the living."

"I'm not the same man I was before."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."