H . D . ▁Ko erner , ▁l ent ▁to ▁Bush , ▁shows ▁a ▁hors eman ▁charg ing ▁up ▁a ▁rug ged ▁mountain ▁trail , ▁followed ▁by ▁others . ▁In ▁the ▁book , ▁Bush ▁says ▁this ▁scene ▁" ep it om izes ▁our ▁mission ": ▁ ▁The ▁painting ▁hung ▁on ▁the ▁west ▁wall ▁of ▁the ▁O val ▁Office ▁during ▁Bush ' s ▁presiden cy . ▁He ▁has ▁explained ▁to ▁journal ists ▁that ▁its ▁title ▁is ▁" based ▁upon ▁a ▁religious ▁h ymn . ▁The ▁h ymn ▁tal ks ▁about ▁serving ▁God ." ▁▁ ▁The ▁phrase ▁" A ▁Char ge ▁to ▁Keep " ▁was ▁attached ▁to ▁the ▁painting ▁because ▁it ▁was ▁used ▁to ▁illustrate ▁a ▁short ▁story ▁of ▁this ▁title ▁by ▁Ben ▁Am es ▁Williams ▁published ▁in ▁ 1 9 1 8 ▁by ▁Country ▁Gent le man ▁magazine . ▁According ▁to ▁Jacob ▁We is berg , ▁Bush ▁" c ame ▁to ▁believe ▁that ▁the ▁picture ▁dep icted ▁the ▁circuit - rid ers ▁who ▁spread ▁Method ism ▁across ▁the ▁Al leg hen ies ▁in ▁the ▁nin ete enth ▁century . ▁In ▁other ▁words , ▁the ▁cow boy ▁who ▁looked ▁like ▁Bush ▁was ▁a ▁mission ary ▁of ▁his ▁own ▁den om ination ." ▁ ▁Cont ents ▁▁▁ ▁Fore word ▁ ▁Ref lections ▁by ▁Kar en ▁Hugh es ▁ ▁A ▁Char ge ▁to ▁Keep ▁ ▁Mid land ▁Val ues ▁ ▁" What ▁Tex ans ▁Can ▁Dream , ▁Tex ans ▁Can ▁Do " ▁ ▁Y ale ▁and ▁the ▁National ▁Guard ▁ ▁Harvard ▁and ▁Mov ing ▁Home ▁ ▁Reading