270 354-430 538-594 algeria augustine autobiography bekering biographies biography bishopofhippo bishops catholicchurch christianlife christianliterature christiansaints développement early earlychristianphilosophy earlyworks earlyworksto1800 faith foi general goodandevil gregory grâce(théologie) grégoire heiligen hippo(extinctcity) history legends louangededieu medieval miracles ouvragesavant1800 philosophy saint saints spirituallife surveys theology transcendancededieu