Here he describes his research with spirit mediums in Brazil. While many mediums exhibit symptoms that are sometimes designated as signs of psychosis, he notes that they typically live productive and meaningful lives showing no signs of pathology. Experimental tests with the famous medium, Chico Xavier, indicated that letters he transmitted to grieving relatives from [...]

Here he explains that Aristotelian logic has captured the Western intellectual mindset for many centuries. He suggests that this type of “either/or” thinking has resulted in harmful wars and violence. He points to several other systems of logic that are more precise, and also more inclusive, than Aristotelian thought. These include Taoist yinyang logic, Buddhist [...]