Who said "The swamp is patient; it waits for those who understand."?

This quote is attributed to Swamp Thing.

The swamp is patient; it waits for those who understand. - Swamp Thing

"The swamp is patient; it waits for those who understand."

Swamp Thing Patience

"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."

"Patience is a virtue I'm still learning."

"I may be a redhead, but I'm not a hothead."

"Patience is a virtue."

"Patience is a virtue I never learned."