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?
Let war be so carried on that no other object may seem to be sought but the acquisition of peace.
[Lat., Bellum autem ita suscipiatur, ut nihil aliud, nisi pax, quaesita videatur.]
The first law for the historian is that he shall never dare utter an untruth. The second is that he shall suppress nothing that is true. Moreover, there shall be no suspicion of partiality in his writing, or of malice.
Just what is the civil law? What neither influence can affect, nor power break, nor money corrupt: were it to be suppressed or even merely ignored or inadequately observed, no one would feel safe about anything, whether his own possessions, the inheritance he expects from his father, or the bequests he makes to his children.
Neither can embellishments of language be found without arrangement and expression of thoughts, nor can thoughts be made to shine without the light of language.