, ▁the ▁Kab bal ah ▁and ▁other ▁sources . ▁Ag ost ino ▁Ste u co ▁( 1 4 9 7 – 1 5 4 8 ) ▁co ined ▁the ▁term ▁philosoph ia ▁per ennis . ▁ ▁A ▁more ▁popular ▁interpretation ▁arg ues ▁for ▁universal ism , ▁the ▁idea ▁that ▁all ▁relig ions , ▁under ne ath ▁seem ing ▁differences , ▁point ▁to ▁the ▁same ▁Tr uth . ▁In ▁the ▁early ▁ 1 9 th ▁century ▁the ▁Trans c endent al ists ▁propag ated ▁the ▁idea ▁of ▁a ▁met aph ys ical ▁Tr uth ▁and ▁universal ism , ▁which ▁inspired ▁the ▁Unit ari ans , ▁who ▁pros ely t ized ▁among ▁Indian ▁el ites . ▁Tow ards ▁the ▁end ▁of ▁the ▁ 1 9 th ▁century , ▁the ▁The osoph ical ▁Society ▁further ▁popular ized ▁universal ism , ▁not ▁only ▁in ▁the ▁western ▁world , ▁but ▁also ▁in ▁western ▁colon ies . ▁In ▁the ▁ 2 0 th ▁century ▁universal ism ▁was ▁further ▁popular ized ▁in ▁the ▁English - spe aking ▁world ▁through ▁the ▁ne o - V ed anta ▁inspired ▁Trad itional ist ▁School , ▁which ▁argued ▁for ▁a ▁met aph ys ical , ▁single ▁origin ▁of ▁the ▁orth odox ▁relig ions , ▁and ▁by ▁Ald ous ▁H ux ley ▁and ▁his ▁book ▁The ▁Per enn ial ▁Philosoph y , ▁which ▁was ▁inspired ▁by ▁ne o - V ed anta ▁and ▁the ▁Trad itional ist ▁School . ▁ ▁Definition ▁ ▁Renaissance ▁The ▁idea ▁of ▁a ▁per enn ial ▁philosophy ▁origin ated ▁with ▁a