ed that the effects resemble certain mental disorders and suggested that they might be used to induce model psychoses.This marvelous experience often occurs as if it were the effect of a superior and invisible power acting on the person from without....This delightful and singular state...gives no advance warning. It is as unexpected as a ghost, an intermittent haunting from which we must draw, if we are wise, the certainty of a better existence. This acuteness of though, this enthusiasm of the senses and the spirit must have appeared to man through the ages as the first blessing....
