▁by ▁the ▁use ▁of ▁either ▁wood ▁trim ▁in ▁some ▁houses ▁or ▁re cess ed ▁negative ▁joint s ▁in ▁others . ▁ ▁Wu ' s ▁work ▁evol ved , ▁yet ▁certain ▁them es ▁remained . ▁His ▁single - family ▁houses ▁typically ▁revol ved ▁around ▁a ▁central ▁core ▁( or ▁cour ty ard ▁as ▁in ▁Du P ont ) ▁from ▁which ▁all ▁rooms ▁em an ated . ▁He ▁frequently ▁used ▁changes ▁of ▁room ▁height ▁to ▁follow ▁terrain ▁or ▁define ▁space . ▁Windows ▁domin ated , ▁at ▁times ▁seem ing ▁to ▁reach ▁toward ▁the ▁light , ▁often ▁rising ▁above ▁the ▁roof line ▁to ▁do ▁so . ▁The ▁neat , ▁rh yth mic ▁pattern ▁of ▁glass ▁in ▁the ▁early ▁houses ▁evol ved ▁into ▁an ▁often ▁in com pre hens ible ▁and ▁varied ▁pla cement ▁of ▁windows ▁of ▁various ▁sizes ▁and ▁shapes ▁in ▁the ▁later ▁work . ▁Lar ge ▁exp ans es ▁of ▁glass ▁remained ▁a ▁constant . ▁Indeed , ▁one ▁of ▁Wu ' s ▁long - running ▁courses ▁at ▁Y ale , ▁" Day light ▁and ▁Architecture " ▁emphas ized ▁his ▁belief ▁that ▁day light ▁was ▁" the ▁most ▁noble ▁of ▁natural ▁phen omena ". ▁ ▁Like ▁many ▁modern ▁architect s ▁of ▁the ▁time , ▁Wu ▁stro ve ▁for ▁total ▁design ▁of ▁the ▁home . ▁When ▁bud gets ▁and ▁clients ▁permitted , ▁he ▁designed ▁furn iture ▁for ▁his ▁houses . ▁Ch airs ▁and ▁tables ▁util ized ▁plan ar ▁surfaces ▁with ▁arms ▁and ▁legs ▁integrated ▁into ▁their ▁structure . ▁U ph ol st ery ▁was ▁simple ▁and ▁non