I didn't want to believe that killing was deep inside of me. I didn't want to think about the part of me that took a dark joy in gathering all the power it could and using it as I saw fit, everything else be damned. There was power to be had in hatred, too, in anger and in lust, in selfishness and in pride. And I knew that there was some dark corner of me that would enjoy using magic for killing—and then long for more. That was black magic, and it was easy to use. Easy and fun. Like Legos.
Jim Butcher, Fool Moon
harry-dresden, magic