RENAISSANCE
ARCHITECTURE 19
fifteenth
totheeighteenth century, correspondedtonoracialmovements
; theywereunaccompaniedbysocialchangesequallysudden, orequallycomplete
;they were undictated, for
themost
part, by anyexterior necessity
; they were unheralded by anynewor subversivediscoverywhether in thescience
ofconstructionor inthe materials
atitscommand.Allthese,andothersuchconditions,did indeedcon-tributetothearchitecturalresult. Sometimestheysettheirlimitstowhatwasaccomplished,sometimesthey provided its opportunity. But none of themseparately, nor all in conjunction,will sufficientlyexplain the essential character of the whole move-ment,orofeachsuccessivestep,noraffordanycluetothesequenceofitsstages. They
areliketheacci-dentsofalandscapewhichmightshapethecourseofa
wanderingstream. But thearchitectureofItalyisariverintheflood. Race,politics^thechangesofsociety, geological facts, mechanical laws, donotexhaust the factors of thecase. Taste—tiie dis-
interestedenthusiasmforarchitectural
form—^issome-
thingwhichthesecannotgiveanddonotnecessarilycontrol. Nevertheless it is by
reference totheseexternal factorsthat the
architectural forms oftheRenaissancearepersistentlyexplained.Letusseehowfarsuch
explanationscancarryus,,It isprobably true
that a'Renaissance'ofarchi-tecture
in Italy
was, on racialgrounds, inevitable.