Found this indirectly via ‘Little White Lies’ – an excellent film magazine – in the current Apocalypse Now issue.

“Superstition, bigotry and prejudice, ghosts though they are, cling tenanciously to life; they are shades armed with tooth and claw. They must be grappled with unceasingly, for it is a fateful part of human destiny that it is condemmed to wage perpetual war against ghosts. A shade is not easily taken by the throat and destroyed.”

Victor Hugo.