260 THE ARCHITECTURE
OFHUMANISM
tongue makes the drift ofeach of them minutelyvisible.WecompareGreekarchitecture
withGothic,andthedifferenceoflanguageissovastthatthey
arescarcecommensurable. Thedeductionswecandraw
areevident, but few. We comparethe
Cancelleriawithabaroquepalace,and,thoughthedivergenceofinterestisscarcelylessextreme,weareabletomeasure
itat every point, to see the same greatchange ofprincipleinahundredshiftingsofproportion,scale,distribution, and
relief, .^thetic cause and effectcanherebecloselywatchedandclearlyverified.One otherfact assists us. Renaissance architec-ture,unifiedbytheconventionofitsspeech,isunified,noless,byaconventionintheuses
forwhichitwasemployed. The memory of the city-state controls
the architecture of the smallest Italian town andkeepsitfaithfultoafixedtradition. Thepalaceand
thechurch,builtfrontallyuponthestreet,thearcadedcourtyard,thepiazza,the public loggiaandthegate—
^thesearethe
perpetualunitsofdesign. Eachhasitsplace,itsoutline,itsconvention. Thechangesofstyle pass over them
;the pattern of
theschemeremains. Renaissance architecture has its ownvocabularyanditsalmostsingletheme.Aninfiniterangeof
purposeinarestrictedrangeofforms—Renaissance
buildings, having this, shoulddisclose the springs
ofarchitecture's
power, ifanybuildings can disclose
them;propitiously,
in the