I believe that, for many people, there is a spiritual dimension in their lives which has nothing to do with religion. I also believe that this has a great deal to do with semantics. Many people find themselves greatly moved by certain experiences, these may be triggered as a response to art, music, the natural world etc. such experiences are not regular or even predictable and we can struggle to define or categorise them. Some of us therefore use the word 'spiritual' to describe these experiences, perhaps as an acknowledgement that we cannot always quantify or define what we feel. Can I present evidence that such experiences are in fact 'spiritual'? No, obviously I can't - I can only say that the word 'spiritual' best sums up what I feel.