Life Debts was Why has DD never suggested Snape thank Harry

[potioncat]

No: HPFGUIDX 117544


 
> >> Ces wrote: 
 Snape is at least honorable in the fact that he is paying off a  
wizard's debt to someone he hates. 
snip 

 
>> > Potioncat:
snip 
 Harry and almost all of us have taken that bit of conversation and  
worked out an elaborate idea of how and when Life Debts are  
formed.  But I don't think they exist at all. 
 
There is one other (I think only one) time that it is mentioned in  
canon, and that is when Harry tosses it up to Snape and Snape 
insists that James was in on the prank.


>>> Dungrollin:
> 
> I don't have my books with me, either, but the main canon in 
support  of the idea is at the end of PoA, when DD's explaining that 
saving Pettigrew's life wasn't such a bad thing.  He says something 
along the lines of 'When one wizard saves another wizards life, a 
certain bond is formed.' And then later 'This is magic at its 
deepest and  most mysterious.' And some stuff about Voldy not being 
too pleased  that one of his servants owes Harry a debt. (Was it 'a 
debt'?  Or 'his life'? Was it 'a certain bond' or 'a deep magical 
bond'?)
 It's a short step from that to, knowing that James saved Snape's  
life, assuming that the same 'certain bond' existed between the two  
of them.

Potioncat:
I found the PoA quotes. You're pretty much right.
PoA  chp 22  DD speaking,
"Pettigrew owes his life to you. You have sent Voldemort a deputy 
who is in your debt... When one wizard saves another wizard's life, 
it creates a certain bond between them...and I'm much mistaken if 
Voldemort wants his servant in the debt of Harry Potter."

and then:

"This is magic at its deepest, its most impenetrable, Harry. But 
trust me...the time may come when you will be very glad you saved 
Pettigrew's life."

OK, so there goes the idea that there is no connection between 
saving someone's life and some sort of "something" debt, 
bond...whatever.

Can anyone locate the place where Snape and Harry talk about it?

I wonder if DD ever said to James: "The day will come when you will 
be very glad you saved Severus' life."