[quote]

"My dear sons, do not conclude that after I have left you I shall of ceased to exist. Even while I have been with you, you have not seen my soul; you knew it was in this body because of the actions that I performed. In the future, too my soul will remain invisible to you, but you should still be able to credit its existence just as you have hitherto."
~Cyrus the Elder... I think?  :)