"narcissistic sociopath"
Sounds about right. On his blow-up interview on the BBC he got mad about Ken Starr runing the lives of the little people back in Arkansas. What about the women's lives he ruined with Carville's smear campaigns? Do they not count? Any CEO in the country would be forced to resign immediately if he sexually harassed an intern. They would do it out of shame if for no other reason. Clinton doesn't feel emotions like shame. When he said, "I feel your pain" he should have worded it, "I have been told you are in pain and I would like to use your pain to get elected." But that would have required honesty, which a sociopath doesn't see a need for. At least his actions show that philosophy classes are still teaching Machiavelli. "The Prince" could be his favorite book.
And more than that, what he told Lehrer is no more the truth than what he told him at the time. For Clinton, the truth is whatever he thinks will work for him the best at the moment. I doubt he has any concept of 'truth' as normal people see that word.
The truth is whatever happens to work for him at the time, and the vilification of Ken Starr worked for him, and he's sticking to it.