Yep. Liberals believe that man's inclination toward evil can be eliminated, while conservatives believe that man has a fallen human nature that isn't going away.
Liberals are trying to create utopia (no matter how many people they have to kill to achieve it), while conservative recognize that it cannot happen. Call it reality-based.
I guess that also explains why liberals tend to be so hostile toward Christianity. I use to think that the religious scandals of the 80s had something to do with it. But I guess when it comes down to it, an inherently flawed sin nature than needs a Savior goes against the idea that humanity can acheive perfection through sheer good intentions and will. And I guess for similar reasons, the state of Israel also goes against the utopian goal.