THE BIOLOGICAL
FALLACY 185
moment,and
developedparipassuwithcreativeart.
Nogiftofimaginativeflexibilitywasrequired. But
fora modem criticism, which claims tojudge with
animpartialeyethewholesequenceofarchitectural
history,orevenofonesingle
'style,'thatgift,beforeallothers,isdemanded. Thedifferentsestheticpur-
poses possible to architecture are not necessarily
equallyworthy
;
butbeforetheirworthcan
beestim-ated
itisnecessaryatleastthattheyshouldberightlydistinguishedanddefined. Ahistoricaldefinitionof
architecture which tracesthe outward
developmentof
formfromformwillnotofitselfsupplytheneededdefinitionsofaesthetic
purpose. Itwillfailtostrikethe right divisions
;it will be toounsubtle, toosummary, toocontinuous. It will be intellectuallysimplebutaestheticallyunjust.Criticismbasedonhistoricevolutioncannomoreaffordashortcuttotheproblemoftastethancriticismthatisbasedonromanticformulasoronmechanicalformulas
oronethical formulas. Itis butanothercaseoffalsesimplification: anotherexampleoftheimpatienceoftheintellectinthepresenceofalivingfunctionthat disownsthe intellect'sauthority.