"Wish You Were Here"

So, so you think you can tell
 Heaven from Hell
 Blue skies from Pain
 Can you tell a green field
 From a cold steel rail ?
 A smile from a veil ?
 Do you think you can tell
 
 And did they get you to trade
 Your heroes for ghosts ?
 Hot ashes for trees ?
 Hot air for a cool breeze ?
 Cold comfort for chains ?
 And did you exchange
 A walk on part in the war
 For a lead role in a cage
 
 How I wish, how I wish you were here
 We're just two lost souls swimming in a fish bowl
 Year after year
 Running over the same old ground
 What have we found ?
 The same old fears
 Wish you were here