There is an expiry date on blaming your parents for steering you in the wrong direction; the moment you are old enough to take the wheel, responsibility lies with you.

I feel I owe you another explanation Harry," said Dumbledore hesitantly. "You may, perhaps, wondered why I never chose you as a prefect? I must confess...that I rather thought...you had enough responsibility to be going on with."
Harry looked up at him and saw a tear trickling down Dumbledore's face into his long silver beard.

I think you have a moral responsibility when you've been given far more than you need, to do wise things with it and give intelligently.

The moment you are old enough to take the wheel, responsibility lies with you.

No snowflake in an avalanche ever feels responsible.

If a mistake is made the honorable thing to do is to own up to it.' Of course I was talking about Levi owning up to his mistakes. But as I finish this book, I realize it applies equally to myself, and to all of us as we try but fail to live up to the standards we know are right. Our inability and unwillingness to keep the standards don't make the standards any less valuable and good.