258THE ARCHITECTURE
OF HUMANISM
architecture obtains itseffectsof Mass or Line,ofSpaceor of Coherence
;and,further, how these
effectsareinterfused: whatsacrifices,for
example,ofLinemaybeexacted when
Mass isthe supremeideal,orwhatminimumofCoherence
allthesevaluesmay
require.Thiswillbethetrueaestheticofarchitecture,andherewouldbefoundthelaws—
^tentative,no
doubt,butstillappropriate—ofthethird
'conditionofwell-building'—
^its'delight.' To combine these lawsof
delight with the demandsof'firmness
'and'com-modity'is afurtherproblem: in factthepracticalproblem ofthe architect. Totrace howthisunion
has beenachieved, andby whatconcessions, isthe
taskof the historian. But all these questions aredistinct.And the crucial, the central, study of
architecturalcriticism isthe first.IllThearchitecture ofthe Renaissanceprovides, forthatstudy,analmostperfectground. First,
itshouldtempt investigation, because—
^as the first chaptershowed—
^thenon-sesthetic elements, whichin archi-tecturearealwaysinterwoven
withthepurefunctionofdesign, wereless prominentinRenaissancearchi-tecture than in anyother style.
It wasan archi-tecturecontrolled,beyond
allothers,bydisinterestedtaste,andisthusthebestfield for
taste'sresearches.