Lilygran - We all have a spiritual component to our being. It may be natural to you to think of any spiritual experience in a religious context, for instance you might thank God for a beautiful sunset or think a male voice choir was singing to his glory. I would experience these with the same surge of emotion but would interpret them differently - the sunset would make me feel at one with nature, the choir would be an example of people coming together to create something which soars above the sum of its parts. It is difficult to offer a logical explanation of spiritual feelings or experiences as they do not come from the logical part of the brain. They relate to the spirit, soul, self, id (call it what you will) and come to the fore during times of grief, joy, despair, love, fellowship and so on. I recall being in an intensely spiritual state for some time after each of my parents died, when I was able to commune wordlessly with my sister, and other relatives - even our cat, usually aloof, snuggled up to me every time I sat down. Flowers seemed more colourful, the moon has never been brighter, everyday happenings were messages from the departed.
I have no religion but do have a strong sense of there being more to us humans than a body and a brain. A simple recent example was during our recent meet-up at Aberdour when Absent was unable to come but said she would be 'there in spirit' which indeed, she was as those of us who know her thought about her on the day and spoke about how we missed her. So, although she was physically absent her spirit was present. I hope this makes sense - it does to me.