Basically:

I haven't changed many of my views/opinions throughout the years. I haven't, because I know/believe that what I chose to believe is right, logical, and good hearted.

Of course, I wouldn't be stubborn and not change one of my beliefs just because I don't like the idea of change.

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Whatever you need to do, you do it.
There's nothing wrong.
If someone needs killing.
You kill 'em.