
These effects are varied but they frequently include a dreamlike state marked by dramatic alterations "in the sphere of experience, in the perception of reality, changes even of space and time and in consciousness of self. Today we know these substances variously as psychotomimetics (psychosis mimickers), psychotaraxics (mind disturbers) and psychedelics (mind manifesters) dry terms which quite inadequately describe the remarkable effects they have on the human mind. Strictly speaking, a hallucinogen is any chemical substance that distorts the senses and produces hallucinations - perceptions or experiences that depart dramatically from ordinary reality. Thus early in this century did Lewis Lewin, perhaps the preeminent pioneer in the study of psychoactive drugs, describe the primal search that led to man's discovery of hallucinogens.

He has done so, even where nature has been most niggardly in producing them and where the products seem very far from possessing the properties which would enable him to satisfy this desire.

The passionate desire which leads man to flee from the monotony of everyday life has made him instinctively discover strange substances.
