▁a ▁fro sty ▁reception . ▁Le ary ▁himself ▁had ▁the ▁flu ▁and ▁did ▁not ▁play ▁host . ▁He ▁later ▁met ▁Ken ▁K ese y ▁and ▁Ken ▁Bab bs ▁quietly ▁in ▁his ▁room ▁and ▁promised ▁to ▁remain ▁al lies ▁in ▁the ▁years ▁ahead . ▁ ▁In ▁ 1 9 6 4 , ▁Le ary ▁co author ed ▁a ▁book ▁with ▁Al pert ▁and ▁Ralph ▁Met z ner ▁called ▁The ▁Psych ed el ic ▁Exper ience ▁based ▁on ▁the ▁Tib et an ▁Book ▁of ▁the ▁Dead . ▁In ▁it , ▁they ▁wrote : ▁ ▁A ▁psych ed el ic ▁experience ▁is ▁a ▁journey ▁to ▁new ▁real ms ▁of ▁conscious ness . ▁The ▁scope ▁and ▁content ▁of ▁the ▁experience ▁is ▁limit less , ▁but ▁its ▁characteristic ▁features ▁are ▁the ▁trans c end ence ▁of ▁ver bal ▁concepts , ▁of ▁spac etime ▁dimensions , ▁and ▁of ▁the ▁e go ▁or ▁identity . ▁Such ▁experiences ▁of ▁en larg ed ▁conscious ness ▁can ▁occur ▁in ▁a ▁variety ▁of ▁ways : ▁sens ory ▁dep riv ation , ▁y oga ▁exer cis es , ▁discipl ined ▁med itation , ▁religious ▁or ▁a est h etic ▁ec st as ies , ▁or ▁sp ont ane ously . ▁Most ▁recently ▁they ▁have ▁become ▁available ▁to ▁anyone ▁through ▁the ▁ing estion ▁of ▁psych ed el ic ▁dru gs ▁such ▁as ▁L SD , ▁ps il ocy bin , ▁mes cal ine , ▁D MT , ▁etc . ▁Of ▁course , ▁the ▁drug ▁does ▁not ▁produce ▁the ▁trans c endent ▁experience . ▁It ▁merely ▁acts