
“The fruit of the tree of knowledge, always drives man from some paradise or other.”
"The Idea of Progress" http://books.google.com/books?id=TbgYAAAAYAAJ&q=%22The+fruit+of+the+tree+of+knowledge+always+drives+man+from+some+paradise+or+other%22&pg=PA5#v=onepage, Romanes Lecture (27 May 1920), reprinted in Outspoken Essays: Second Series (1922)