Understanding is often a prelude to forgiveness, but they are not the same, and we often forgive what we cannot understand (seeing nothing else to do) and understand what we cannot pardon.
it's easier to forgive your enemies than to forgive your friends.
The Crucifixion and other historical precedents notwithstanding, many of us still believe that outstanding goodness is a kind of armor, that virtue, seen plain and bare, gives pause to criminality. But perhaps it is the other way around.
Others are to us like the characters in fiction, eternal and incorrigible; the surprises they give us turn out in the end to have been predictable and unexpected variations on the theme of being themselves.