Well, this may not be true for a sociopath, but I think it is for any marginally normal person possessed of a conscience.
There are souls that in their narrowness blame the whole world. But overwhelm such a soul with mercy, give it love, and it will curse what it has done, for there are so many germs of good in it. The soul will expand and behold how merciful God is, and how beautiful and just people are. He will be horrified, he will be overwhelmed with repentance and the countless debt he must henceforth repay.