Is It Possible to Inflict Suffering?

Human being is capable of doing terrible things to some one else, and consciously. We can inflict tremendous pain and suffering on each other in a way that no other animal can manage. But it's a moral story, because with that ability to inflict suffering comes the knowledge of good and evil. As far as i'm concerned, those are identical propositions,. Now we have the choice, a deep choice, about how we're going to treat ourselves and each other....