Who said "Death is merely a transition, not a conclusion."?

This quote is attributed to Scarecrow.

Death is merely a transition, not a conclusion. - Scarecrow

"Death is merely a transition, not a conclusion."

Scarecrow Death

"Breathe in the fear. There's nothing like it."

"Fear is a tool. When that light hits the sky, it's not just a signal. It's a message."

"Scarecrows are effective. They prey on an emotion."

"The mind is the best weapon."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."