▁Ib sen ▁took ▁this ▁tale , ▁a ▁common ▁legend ▁at ▁many ▁German ▁churches , ▁as ▁evidence ▁of ▁a ▁per vas ive ▁human ▁belief ▁that ▁a ▁man ▁could ▁not ▁achieve ▁success ▁without ▁pay ing ▁a ▁price . ▁From ▁Ib sen ' s ▁ins cription ▁in ▁the ▁copy ▁of ▁the ▁play ▁he ▁sent ▁to ▁R aff ▁( he ▁sent ▁no ▁copy ▁to ▁B ard ach ), ▁she ▁too ▁can ▁be ▁regarded ▁as ▁an ▁insp iration ▁for ▁the ▁une qual ▁affair ▁between ▁H ilda ▁and ▁Sol ness . ▁An ▁equally ▁obvious ▁influence ▁is ▁Ib sen ' s ▁relationship ▁with ▁H ild ur ▁Anders en , ▁whom ▁he ▁met ▁as ▁the ▁ 1 0 - year - old ▁child ▁of ▁friends ▁and ▁who , ▁when ▁she ▁had ▁reached ▁the ▁age ▁of ▁ 2 7 , ▁became ▁his ▁constant ▁companion . ▁He ▁wrote ▁of ▁H ild ur ▁as ▁" his ▁bird ▁of ▁the ▁woods ", ▁the ▁phrase ▁he ▁initially ▁uses ▁to ▁describe ▁his ▁character ▁H ilda , ▁but ▁the ▁character ▁ref uses ▁this , ▁accepting ▁only ▁that ▁she ▁is ▁a ▁" bird ▁of ▁pre y ", ▁as ▁was ▁B ard ach . ▁The ▁character ▁of ▁H ilda ▁is ▁a ▁bl end ▁of ▁all ▁three ▁women , ▁but ▁H ild ur ▁Anders en ▁was ▁the ▁most ▁significant . ▁ ▁The ▁aut obi ographical ▁elements ▁Ib sen ▁includes ▁go ▁further ▁than ▁his ▁relationships ▁with ▁B ard ach , ▁R aff ▁and ▁Anders en : ▁In ▁the ▁character ▁of ▁Sol ness , ▁Ib sen ▁is ▁drawing ▁par alle ls ▁with ▁his