Forgiving does not erase the bitter past. A healed memory is not a deleted memory. Instead forgiving what we cannot forget creates a new way to remember. We change the memory of our past into a hope for our future.
It takes one person to forgive it takes two people to be reunited.
You do have to change things as warfare changes.
Where it is a duty to worship the sun it is pretty sure to be a crime to examine the laws of heat.