Occlumency VERY VERY LONG

[dumbledore11214]

No: HPFGUIDX 191718


Alla:
> > Aha, but what could be concern for his safety here? To make sure he does not sneak out again right now? See I think I am missing something here.
> 
> Pippin:
> Harry has just secretly gotten out of school. More to the point, he has just secretly gotten *in*. That's not supposed to be possible. The school is surrounded with dementors and every  precaution has been taken against unauthorized entry. 
> 
> If Harry can get in undetected, so can Sirius, whom everyone including Harry believes to be a murderer. For all Snape knows, Sirius himself is in the school at that very moment just waiting for another chance.  <SNIP>

Alla:

Oooo, ok thank you, sure I can see how it could be justified if this was what Snape was thinking. I still would have wanted Snape to use another method, but I understand now how he could have looking to prevent future danger.

Pippin:
<SNIP>
> As to why Snape hides some of his memories in the Pensieve, he's got to make Voldemort think he's a less accomplished occlumens than he really is, so Snape and Dumbledore are pretending that Snape can't be really sure of protecting his memories without help.

Alla:

Could you please remind me the canon for this? Thank you.