I caught this phrase from my recent orkut account. It simply catched my mind as soon as I read it. I just thought "How true".
Recently I read a column by Ravi Belegere who wrote "Parents keep forgiving mistakes their children commit through out their younger days till they commit their biggest crime in life. Then they say 'being my son/daughter how can you do this. I cannot just believe it' forgetting that they only nurtured this behavior till that point of time.