THE
ETHICALFALLACY
157Last, there
was monumental architecture.The
resourceslearntinthe theatremust
herebesubject
torestraint.
Herewemustholdsecureoursenseof
permanenceandstrength. No
falsities,noillusions,canhere
be tolerated that, when the eye discovers
them, will lower our confidence in these qualities.
Butdeceptionswhichpassunnoticed,
andthosewhich
havenoreferencetostabilityandmass
—
deceptionsof which the psychologic effect is
negligible
—
^mayeven
herebeadmitted. The Parthenondeceivesus
in ahundred ways, with its curved pediment and
stylobate,itsinclinedand thickenedcolumns. Yet
thesenseofstabilitywhichitgainsfromthesedevices
survivesourdiscoveryofthefactsofitsconstruction.
TheItalianmasteryofopticswaslesssubtlethanthe
Greek, butit was putto wideruses. Perhaps the
most familiarinstance of itsemployment is in the
gallerieswhichconnectSt.
Peter'swiththecolonnadeof Bernini. Here thesupposedly parallel lines
con-verge
on plan
andlengthen the perspective. This,indeed, is by no means a remarkably successful
expedient, since what is gained for the eastward
perspective is lost in that
towards the west. Butthere
is noloss
ofmonumentality. Theimportant
point, realised by the
architects of this period, isthat,
even
inmonumentalarchitecture,thequestionof
*deceit' is one ratherofdegree than principle,ratherof
experiment thanlaw. A
designthatisin