Loss means losing what was We want to change but we don't want to lose. Without time for loss we don't have time for soul.
It's very hard to know what wisdom is.
You do have to change things as warfare changes.
A Shakespearean tragedy as so far considered may be called a story of exceptional calamity leading to the death of a man in high estate. But it is clearly much more than this and we have now to regard it from another side.