There is something about faith that drives believers to, on the one hand, astound the world with what the human spirit is capable of accomplishing, and on the other, commit the most heinous of crimes in the name of their religions.
Take for instance, the religious inspired monuments and objets d'art molded with mere mortal hands. At the other end of the spectrum, there were the 'holy' wars which saw the slaughter of men, women and children.