Who said "What separates us from nature but our own ignorance?"?

This quote is attributed to Swamp Thing.

What separates us from nature but our own ignorance? - Swamp Thing

"What separates us from nature but our own ignorance?"

Swamp Thing Education

"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."

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."