"Forgiving those who actively continue to seek your death is but another form of suicide."
I couldn't quite put it together in a sentence as tight and concise as that, but that's exactly it.
And this as well:
"Forgiving terrorists is no less than
giving them license to murder more innocent people. To forgive those who
remain unrepentant is to become an accomplice to all of their future
"Forgiveness is a virtue only when granted as a gift for those filled
with remorse who vow never again to repeat their transgressions. That is
why I find the words on the new Charlie Hebdo cover, "Tout Est Pardonne," obscene."