Yes, as all of you clearly stated, an unbreakable vow was involved between Snape and Dumbledore, which is how Dumbledore could be so certain he could trust Snape. Given Dumbledore's past as we know it, I am sure that he trusted very few people and an unbreakable vow would be in order.
Now, Linda brought up a very good point: "I actually think Snape was less likely to harm Harry than Dumbledore was, after reading DH."
I sort of agree with this statement, but at the same time, I don't. I don't think that either one would deliberately harm Harry. They both wanted to help Harry, but for different reasons: Snape because of his love for Lily and feeling guilt about her death; Dumbledore because he wanted to see the demise of Voldemort. However, Dumbledore was stubborn and didn't like to tell of his past, which this alone could have scarred Harry from not 'knowing'. Sometimes knowledge (or none) is the greatest curse of all. |