With philosophy and insight from Dennis McKenna, Terence McKenna, Clark Heinrich, Alex Grey, and many others, this broad look at entheogens is not to be missed by anyone interested in psyche... Read allWith philosophy and insight from Dennis McKenna, Terence McKenna, Clark Heinrich, Alex Grey, and many others, this broad look at entheogens is not to be missed by anyone interested in psychedelics and shamanism.With philosophy and insight from Dennis McKenna, Terence McKenna, Clark Heinrich, Alex Grey, and many others, this broad look at entheogens is not to be missed by anyone interested in psychedelics and shamanism.