Paries quartus
Paries quartus est in theatro "paries" imaginarius in fronte positus, per quem spectatores actus fabulae intuentur. Hanc rem primus explicat Dionysius Diderot; deinde in theatro saeculi XIX disseminata est. Quae aetas rem ad aliquam marginem inter quodquam opus fictum audientesque...(???)

Praesentia "parietis quarti" est mos conditus in fabulis et dramate. Mos ipse artifices aliquos induxit, ut animos spectatorum ioci causa ad parietem adverterent. Actor, cum ad spectatores ipsos verba faciens morem solitum infringeret, "parietem quartum frangere" dicebatur.

Notae

Bibliographia 
 Bell, Elizabeth S. (2008), Theories of Performance, Los Angeles: Sage, pp. 303, ISBN 978-1-4129-2637-9
 Wallis, Mick; Shepherd, Simon (1998), Studying plays, London: Arnold, pp. 214, ISBN 0-340-73156-7
 Abelman, Robert (1998), Reaching a critical mass: a critical analysis of television entertainment, Mahwah, N.J.: L. Erlbaum Associates, pp. 8–11, ISBN 0-8058-2199-6

Theatrum