I think Snape might've taught himself Occlumency while dealing with Voldemort, so that Voldemort couldn't see any of his thoughts. Because whether Snape was working for Dumbledore or not, I have storng feelings that Snape isn't all evil and bad. I'm quite sure he would never turn into a person like Voldemort.Originally Posted by Gmariam
If Snape didn't learn Occlumency because of the Dark Lord, then he learned from the Dark Lord. Maybe Voldemort taught him Occlumency so that Dumbledore couldn't see that Snape was working for Voldemort. (If Dumbldore was, in fact, a Legilimens. (sp?))

