Whats your theories on true meaning behind "the Wall"?

For me, one of the big features in The wall was his mothers influence on his live. From a psychological perspective its brilliant. It uses imagiry brilliantly to show how his mother "put her fears into him" and how she "scarred his earth"(Black bird taking piece of earth). I don't think i've ever seen a movie decribe the effect of the bad mother more beautifully and accurately on the son. But thats just my opinion. I would like to hear other opinions. Please write!

Ugh, I sense a DDT headache coming on. Feel free to use the search feature located in the top right hand corner.

The mother is just one of many bricks. Did she, for example, kill his father? Tease him at school? Marry him then leave him for another man? Inject him with drugs?

The moral behind the story is "cheese".