omy ▁p ess im ism ▁of ▁his ▁early ▁years ▁and ▁argued ▁that ▁there ▁are ▁aspects ▁of ▁human ▁be ings , ▁such ▁as ▁reason , ▁conscious ness , ▁free ▁will , ▁and ▁moral ▁judgment , ▁that ▁cannot ▁be ▁explained ▁by ▁mechan istic , ▁determin istic ▁science . ▁ ▁After ▁moving ▁to ▁T uc son , ▁Arizona ▁in ▁ 1 9 5 2 , ▁partly ▁for ▁reasons ▁of ▁health , ▁Kr utch ▁wrote ▁several ▁books ▁about ▁natural ▁issues ▁of ▁e col ogy , ▁the ▁south western ▁desert ▁environment , ▁and ▁the ▁natural ▁history ▁of ▁the ▁Grand ▁C any on , ▁winning ▁ren own ▁as ▁a ▁natural ist , ▁nature ▁writer , ▁and ▁an ▁early ▁conservation ist . ▁Like ▁Ald o ▁Leopold , ▁who ▁greatly ▁influenced ▁him , ▁Kr utch ▁believed ▁that ▁human ▁be ings ▁must ▁move ▁beyond ▁purely ▁human ▁centered ▁conception s ▁of ▁" con serv ation " ▁and ▁learn ▁to ▁value ▁nature ▁for ▁its ▁own ▁sake . ▁Kr utch ▁developed ▁a ▁p ant he istic ▁philosophy . ▁Histor ian ▁Donald ▁Wor ster ▁commented ▁that ▁Kr utch ▁" bec ame ▁a ▁kind ▁of ▁p ant he ist ▁or ▁eth ical ▁myst ic , ▁caught ▁up ▁in ▁the ▁joy ▁of ▁belonging ▁to ▁something ▁greater ▁than ▁one ' s ▁self ." ▁ ▁Death ▁Kr utch ▁died ▁in ▁T uc son , ▁Arizona ▁at ▁age ▁ 7 6 ▁from ▁colon ▁cancer ▁in ▁ 1 9 7 0 . ▁One ▁of ▁the ▁last ▁inter views ▁with ▁Kr utch ▁before ▁his ▁death ▁was ▁conducted ▁by ▁Edward ▁Ab bey ▁and ▁appears