- use ▁phenomen on , ▁eventually ▁with ▁the ▁intention ▁of ▁" st amp ing ▁out " ▁such ▁usage ▁through ▁the ▁criminal izing ▁of ▁these ▁dru gs . ▁Le ary ▁was ▁one ▁of ▁several ▁expert ▁witness es ▁called ▁to ▁test ify ▁at ▁these ▁hear ings . ▁In ▁his ▁testim ony , ▁Le ary ▁assert ed ▁that ▁" the ▁challenge ▁of ▁the ▁psych ed el ic ▁chemical s ▁is ▁not ▁just ▁how ▁to ▁control ▁them , ▁but ▁how ▁to ▁use ▁them ." ▁He ▁impl ored ▁the ▁sub comm ittee ▁not ▁to ▁criminal ize ▁psych ed el ic ▁drug ▁use , ▁which ▁he ▁felt ▁would ▁only ▁serve ▁to ▁expon entially ▁increase ▁its ▁usage ▁among ▁America ' s ▁youth ▁while ▁removing ▁the ▁saf egu ards ▁that ▁controlled ▁" set ▁and ▁setting " ▁provided . ▁When ▁sub comm ittee ▁member ▁Senator ▁Ted ▁Kennedy ▁of ▁Massachusetts ▁asked ▁Le ary ▁if ▁L SD ▁usage ▁was ▁" ext rem ely ▁dangerous ," ▁Le ary ▁replied , ▁" S ir , ▁the ▁motor ▁car ▁is ▁dangerous ▁if ▁used ▁impro per ly ... H uman ▁stupid ity ▁and ▁ignor ance ▁is ▁the ▁only ▁danger ▁human ▁be ings ▁face ▁in ▁this ▁world ." ▁To ▁conclude ▁his ▁testim ony , ▁Le ary ▁suggested ▁that ▁legisl ation ▁be ▁en act ed ▁that ▁would ▁require ▁L SD ▁users ▁to ▁be ▁adult s ▁who ▁were ▁compet ently ▁trained ▁and ▁lic ensed , ▁so ▁that ▁such ▁individuals ▁could ▁use ▁L SD ▁" for ▁serious ▁purposes , ▁such ▁as ▁spiritual ▁growth , ▁purs uit ▁of ▁knowledge , ▁or ▁their ▁own