▁International ▁Federation ▁for ▁In ternal ▁Fre edom ▁( I FI F ), ▁the ▁Cast alia ▁Foundation , ▁and ▁the ▁League ▁for ▁Spirit ual ▁Disc overy . ▁ ▁During ▁late ▁ 1 9 6 6 ▁and ▁early ▁ 1 9 6 7 , ▁Le ary ▁tou red ▁college ▁camp uses ▁present ing ▁a ▁multimedia ▁performance ▁entitled ▁" The ▁Death ▁of ▁the ▁Mind ", ▁attempting ▁an ▁art istic ▁rep lication ▁of ▁the ▁L SD ▁experience . ▁He ▁said ▁that ▁the ▁League ▁for ▁Spirit ual ▁Disc overy ▁was ▁limited ▁to ▁ 3 6 0 ▁members ▁and ▁was ▁already ▁at ▁its ▁membership ▁limit , ▁but ▁he ▁encourag ed ▁others ▁to ▁form ▁their ▁own ▁psych ed el ic ▁relig ions . ▁He ▁published ▁a ▁pam ph let ▁in ▁ 1 9 6 7 ▁called ▁Start ▁Your ▁O wn ▁Religion ▁to ▁encou rage ▁people ▁to ▁do ▁so . ▁ ▁Le ary ▁was ▁invited ▁to ▁attend ▁the ▁January ▁ 1 4 , ▁ 1 9 6 7 ▁Human ▁Be - In ▁by ▁Michael ▁Bow en , ▁the ▁primary ▁organ izer ▁of ▁the ▁event , ▁a ▁gather ing ▁of ▁ 3 0 , 0 0 0 ▁hi pp ies ▁in ▁San ▁Francisco ' s ▁Golden ▁Gate ▁Park . ▁In ▁speaking ▁to ▁the ▁group , ▁Le ary ▁co ined ▁the ▁famous ▁phrase ▁" Turn ▁on , ▁t une ▁in , ▁drop ▁out ." ▁In ▁a ▁ 1 9 8 8 ▁interview ▁with ▁Neil ▁Stra uss , ▁he ▁said ▁that ▁this ▁s log an ▁was ▁" g iven ▁to ▁him " ▁by ▁Marshall