Is it always necessary to explain spirituality using the soul? Can not spirituality be 'defined' elaborated by other characteristics than making it sound 'religious'? I've always found it sufficient to provide a rather comprehensive picture of spirituality using the triple dimension of ability to know, to choose and to love (or form friendships). Today in class, someone asked me this question: Is it all? Are there not other aspects which make the human being a spiritual being? I threw back the question to the whole class and no one had anything to say... so I left it at that.
Frankly speaking, if we look at spirituality from a very practical and realistic perspective, the above mentioned aspects suffice. It is only when we want to envelope it in a show of piety, that we need to add stuff to the list.