how many? how many hearts have you broken? how many people have you left unmended? how many innocent people have you torn apart?
how much? how much pain have you caused? how much tear has been shed? how much trust has been crushed?
how? how can you sleep at night, knowing you've hurt more than a fly? how can you eat a lot, knowing you made someone lose their appetite? how can you still stand still, knowing you never bothered catching anyone who fall?