Is there a Soul?

Not a very uncommon question.  I think most people, myself included, have pondered whether or not the Soul exists.  This is by no means a small or easy question.  For some, the answer is clearly a "Yes" or a "No".  I personally lean more towards a Yes, although it is not a definitive Yes.  You could say I am searching for the Holy Grail of evidence for the Soul.  Which I haven't found yet.... yet.