How do I recover "discarded" files using Pages? I was trying to save a file on my Mac and it said 


  The document could not be saved. 
  You don't have permission


I have papers to write and recover because they decided to delete themselves  

How do I fix this "You don't have permission" error when using Pages on OS X?
Sometimes the System and or User permissions need cleaning/Repair

To fix the System level permissions:

Open Disk Utility and repair the permissions.

To fix the user level permissions 

Restart while holding the cmd-r.

The select reset password (you will NOT be resenting the password)

Instead use the restore ACL's on that screen,