Piranesi's nightmare

Piranesi's LA PRIGIONE È (NEL)LA MENTE (The Prison of the Mind) gives the deadening struggle (even in our own day!) between Enlightenment and Medieval architectures of the mind; of the gnawing worries and torments without respite that magnify and never clarify; no exchange between grotesque figures, dark endless subterranean passages and psychological causes; the 'inner spectator' of the world imprisoned in gloomy superstitious drudgery, aptly called 'Carceri d'Invenzione'.

Here's a willful refusal to acknowledge with Locke that "No man's knowledge here can go beyond his experience." I'm still amazed at how much of the world everywhere is stuck in Piranesi's 'Prigione'..

Deadening prison of the mind (even in our sight!),

and gnawing griefs