260 THE ARCHITECTURE
OFHUMANISM
tongue makes the drift of
each of them minutely
visible.
WecompareGreekarchitecture
withGothic,
andthe
differenceoflanguageissovast
thatthey
are
scarcecommensurable. The
deductionswecandraw
are
evident, but few. We comparethe
Cancelleria
witha
baroquepalace,and,thoughthedivergenceof
interestisscarcely
lessextreme,weareabletomeasure
itat every point, to see the same greatchange of
principle
inahundredshiftingsofproportion,scale,
distribution, and
relief, .^thetic cause and effect
canherebecloselywatchedandclearlyverified.
One otherfact assists us. Renaissance architec-
ture,
unifiedbytheconventionofitsspeech,isunified,
noless,byaconventioninthe
uses
forwhichitwas
employed. The memory of the city-state controls
the architecture of the smallest Italian town and
keepsitfaithfultoafixedtradition. Thepalaceand
thechurch,builtfrontallyuponthestreet,thearcaded
courtyard,thepiazza,the public loggiaandthegate
—
^these
arethe
perpetualunitsofdesign. Eachhas
itsplace,itsoutline,itsconvention. Thechangesof
style pass over them
;
the pattern of
the
scheme
remains. Renaissance architecture has its own
vocabularyanditsalmostsingletheme.
Aninfiniterangeof
purposeinarestrictedrangeof
forms—Renaissance
buildings, having this, should
disclose the springs
ofarchitecture's
power, ifany
buildings can disclose
them
;
propitiously,
in the