ors ▁were ▁interrupted ▁by ▁the ▁breaking ▁out ▁of ▁the ▁Swiss ▁Son der bund ▁war , ▁during ▁which ▁he ▁was ▁military ▁chap lain ; ▁but ▁after ▁its ▁end ▁he ▁was ▁obliged ▁to ▁fle e ▁into ▁P ied mont , ▁from ▁there ▁to ▁Lin z ▁and ▁to ▁G ries . ▁Finally , ▁he ▁found ▁a ▁safe ▁refuge ▁at ▁Rib eau v illé ▁in ▁Als ace ▁as ▁t utor ▁in ▁the ▁family ▁of ▁his ▁coun tr yman ▁and ▁friend ▁Sieg wart - M üller , ▁also ▁exp atri ated . ▁He ▁stayed ▁there ▁until ▁ 1 8 4 9 . ▁▁ ▁R oh ' s ▁professor ship ▁of ▁dog mat ics ▁at ▁the ▁Catholic ▁University ▁of ▁Le u ven ▁only ▁last ed ▁a ▁year . ▁When ▁the ▁Catholic ▁miss ions ▁for ▁the ▁common ▁people ▁were ▁opened ▁in ▁Germany ▁in ▁ 1 8 5 0 , ▁his ▁real ▁lab ors ▁began ; ▁as ▁he ▁said ▁himself , ▁" P raise ▁God , ▁I ▁now ▁come ▁into ▁my ▁element ." ▁ ▁He ▁was ▁an ▁ext empor aneous ▁speaker ; ▁the ▁writing ▁of ▁ser m ons ▁and ▁addresses ▁was , ▁as ▁he ▁himself ▁conf essed , ▁" simp ly ▁impossible " ▁to ▁him . ▁ ▁Works ▁ ▁He ▁could ▁also ▁write ▁when ▁necessary , ▁as ▁several ▁articles ▁from ▁him ▁in ▁the ▁" St im men ▁aus ▁Maria - La ach " ▁prove . ▁In ▁his ▁pam ph let ▁" D as ▁alte ▁Lied : ▁der ▁Zwe ck ▁he il igt ▁die ▁Mittel , ▁im ▁Tex te ▁verb ess ert