Paul Brunton Philosophic Foundation homepage > Notebooks of Paul Brunton
It is true that a number of persons who have used a plant (not chemical) drug have had visions of previous embodiment in animal and human forms. But because they got it in an illegitimate way, they often have to suffer a penalty, either in self-damage or in self-entangled karma.
-- Notebooks Category 10: Healing of the Self > Chapter 3 : The Origins of Illness > # 147