Lucius Cassius ille quem populus Romanus verissimum et sapientissimum iudicem putabat identidem in causis quaerere solebat 'cui bono' fuisset. The famous Lucius Cassius, whom the Roman people used to regard as a very honest and wise judge, was in the habit of asking, time and again, 'To whose benefit?
Nothing is more unworthy of a wise man, or ought to trouble him more, than to have allowed more time for trifling, and useless things, than they deserve.
Temperance is love surrendering itself wholly to Him who is its object; courage is love bearing all things gladly for the sake of Him who is its object; justice is love serving only Him who is its object, and therefore rightly ruling; prudence is love making wise distinction between what hinders and what helps itself.
It is only the enlightened ruler and the wise general who will use the highest intelligence of the army for the purposes of spying, and thereby they achieve great results.