Who said "Death in the swamp is not an ending, but a transformation."?

This quote is attributed to Swamp Thing.

Death in the swamp is not an ending, but a transformation. - Swamp Thing

"Death in the swamp is not an ending, but a transformation."

Swamp Thing Death

"I am the swamp. The swamp is me."

"What was I? What am I now?"

"The man I was is gone. Only the swamp remains."

"They made me into this... this thing."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."