▁standing ▁trad itions . ▁ ▁Ald ous ▁H ux ley ▁and ▁myst ical ▁universal ism ▁One ▁such ▁universal ist ▁was ▁Ald ous ▁H ux ley , ▁who ▁propag ated ▁a ▁universal ist ▁interpretation ▁of ▁the ▁world ▁relig ions , ▁inspired ▁by ▁V ive kan anda ' s ▁ne o - V ed anta ▁and ▁his ▁own ▁use ▁of ▁psych ed el ic ▁dru gs . ▁According ▁to ▁Ald ous ▁H ux ley , ▁who ▁popular ized ▁the ▁idea ▁of ▁a ▁per enn ial ▁philosophy ▁with ▁a ▁larger ▁audience , ▁ ▁In ▁H ux ley ' s ▁ 1 9 4 4 ▁ess ay ▁in ▁V ed anta ▁and ▁the ▁West , ▁he ▁describes ▁The ▁Min imum ▁Working ▁Hyp oth esis ; ▁the ▁basic ▁outline ▁of ▁the ▁per enn ial ▁philosophy ▁found ▁in ▁all ▁the ▁myst ic ▁branches ▁of ▁the ▁relig ions ▁of ▁the ▁world : ▁ ▁Orig ins ▁ ▁The ▁per enn ial ▁philosophy ▁origin ates ▁from ▁a ▁bl ending ▁of ▁ne o - Pl aton ism ▁and ▁Christian ity . ▁Ne o - Pl aton ism ▁itself ▁has ▁diverse ▁orig ins ▁in ▁the ▁syn cret ic ▁culture ▁of ▁the ▁H ellen istic ▁period , ▁and ▁was ▁an ▁influ ential ▁philosophy ▁throughout ▁the ▁Middle ▁A ges . ▁ ▁Class ical ▁world ▁ ▁H ellen istic ▁period : ▁religious ▁syn cret ism ▁ ▁During ▁the ▁H ellen istic ▁period , ▁Alexander ▁the ▁Great ' s ▁campaign s ▁brought ▁about ▁exchange ▁of ▁cultural ▁ideas ▁on ▁its ▁path ▁throughout ▁most ▁of ▁the ▁known ▁world ▁of ▁his