I have defined spirituality as the negotiation of the boundaries between "I" and "we".
There is a concrete aspect to this process, involving an assessment of personal strengths and weaknesses, and evaluating strategies for allocating resources to ensure that our goals are met as individuals and as a community. In developing meaningful terms of debate, our discussion of philosophy has considered these matters, and given a sense of their complexity. Intellectually, one might ask what is left for us to consider here.
In fact, defining boundaries between "I" and "we" involves a tangible merging of personalities that is not accounted for by our accepted physics. This knowledge has been intentionally suppressed by the psychotherapeutic community since the Second Great War. It was once studied as a technology by Jung and his fellow travelers. Unfortunately, the consensus evolved by those competing with the violence of Fascism and Communism was that the prevailing mode of male integration was violent insanity. This is an error. The excesses of Fascism and Communism grew in unsustainable political conditions, ignored until the advent of violence, that bred fear and anger.
The point of this treatise is that it is not hard to imagine physical realities in which all of the phenomenon normally considered "spiritual" - telepathy, clairvoyance, faith-healing, reincarnation, etc. - are simply part of the order of physical reality. Some of these are easier to grasp than others. I find, for example, that faith-healing requires a significant extension of our understanding of the nature of the dimensionality of consciousness.
Not only does this statement challenge common scientific prejudice, the wisdom provided here can undermine the moral initiatives mounted by well-meaning peoples of many religious traditions. Devotees of the Quballah have cautioned me that men should not fully enter spiritual awareness before they are forty. Women in general, in this day and age, seem to believe that men are dangerous pets, not realizing that feminine fear - and most significantly the fear of separation - is the goad to male violence. And many religious traditions have confused situational ethics with morality, leading to untold human suffering. The message here is that, when love and understanding have washed the reactions of fear and hatred out of our personal and social processes, it is seen that none of the strictures has any basis in truth.