Ego could be deemed to have two meanings or functions. Primarily, it was given to the mind as a faculty that gives man the power of awareness of the self. In other words, self differentiation, the I-ness.
Browsing: Attachment
Without the basic understanding of the mind or life itself, all sermons and homilies delivered by any Preacher or Priest will appeal only as long as we are within the confines of the four walls at which they were delivered. As soon as we depart such assembly, the very first gusty winds will blow whatever had been heard or learnt away and we will once again be back to our worldly ways.