What makes a photograph really great ?

Had a good old fashion, old school photog conversation this evening.

What makes a photograph a really great image?  Not  a good photo , a great photo? And I am not talking  “awesome ” photo on Facebook here.

My take away and I am standing by it: Lighting , Content, Composition, but the really most important… how do you feel when I  see it , and does it cause me to think.

Have not quite decided what image I feel worthy of connecting the dots with this post 🙂