"A man of knowledge is free...he has no honor, no dignity, no family, no home, no country, but only life to be lived." --don Juan <P> In 1961 a young anthropologist subjected himself to an extraordinary apprenticeship to bring back a fascinating glimpse of a Yaqui Indian's world of "non-ordinary reality" and the difficult and dangerous road a man must travel to become "a man of knowledge." Yet on the bring of that world, challenging to all that we believe, he drew back. <P> Then in 1968, Carlos Castaneda returned to Mexico, to don Juan and his hallucinogenic drugs, and to a world of experience no man from our Western civilization had ever entered before.