There is so much authority that comes out of the existing primary mystical experience that it can be threatening to existing hierarchal structures. – Rolland Griffiths this book can be an opening. Iris read it and said that it has had more of an impact than any other book that she is read in a long time. A really excellent read. For someone who experimented with psychedelics in my teens I was too young to realize and take advantage of the benefits. This book explores and reflects better than any that I have read about the consciousness raising possibilities of psychedelics. While they don’t represent a magic fix they can be part of a door opening and new and more comprehensive and holistic perceiving, envisioning and creativity. Pollan explores this with great expertise. At this late age of Sixty five I have the urge to indulge in some shrooms. Its never too late.