106 THEARCHITECTURE OFHUMANISM
fromthepointofviewofart,theelementofbeauty
is indispensable, while the element of constructive
rationalityisnot. Theconstruction
of
abuilding,it
mightconceivablybesuggested,issimplyautilitarian
necessity,andexistsfor
art
onlyasabasisor
means
for creating
beauty, somewhat
as
pigments and
canvasexistforthepainter. Insecurestructures,like
fadingpigments,aretechnicalfaultsofart
;
all
other
structuralconsiderations
are,forthepurposesofart,
irrelevant.
And architecturalcriticism, insofaras
itapproachesthe
subjectasanart,oughtperhapsto
takethisview.
T^But there thescientific criticismshould
certainly
haveitsreply. Granting,
itwillsay,thatbeautyis
a more essential
quality in good architecture than
constructive rationality, and that
the twoelements
cannotbeidentified,and
admittingthatthecriticism
of
architecturalartshouldacceptthispointofview,
there is stillafurther consideration. It willclaim
that architectural
beauty,thoughdifferentfromthe
simple
idealofengineering,isstillbeautyojstructure,
and, as such, different from
pictorial or
musigal
beauty: thatitdoes
not resideinpatternsof
light
and
shade, or even in the agreeable disposition of
masses,butinthe
structure,inthe visiblerelations
offorces.
Theanalogybetweenconstructionandthe
merematerialbasisof
thepainter'sart,itwillsay,
is
false:wetake
nodelightintheway
apainter
stretches'