...war is just to those for whom it is necessary, and arms are clear of impiety for those who have no hope left but in arms.
LivyThe study of history is the best medicine for a sick mind; for in history you have a record of the infinite variety of human experience plainly set out for all to see; and in that record you can find yourself and your country both examples and warnings; fine things to take as models, base things rotten through and through, to avoid.
Livy