When you describe mountains, rivers, and bulwarks, avoid all pomp and ostentation, as if you meant to show your own eloquence; pass over these things as slightly as you can, and rather aim at being useful and intelligible. Observe how the great and sublime Homer acts on these occasions! as great a poet as he is, he says nothing about Tantalus, Ixion, Tityus, and the rest of them. But if Parthenius, Euphorion, or Callimachus, had treated this subject, what a number of verses they would have spent in rolling Ixion's wheel, and bringing the water up to the very lips of Tantalus! Mark, also, how quickly Thucydides, who is very sparing {66b} of his descriptions, breaks off when he gives an account of any military machine, explains the manner of a siege, even though it be ever so useful and necessary, or describes cities or the port of Syracuse. Even in his narrative of the plague which seems so long, if you consider the multiplicity of events, you will find he makes as much haste as possible, and omits many circumstances, though he was obliged to retain so many more. When it is necessary to make any one speak, you must take care to let him say nothing but what is suitable to the person, and to what he speaks about, and let everything be clear and intelligible: here, indeed, you may be permitted to play the orator, and show the power of eloquence. With regard to praise, or dispraise, you cannot be too modest and circumspect; they should be strictly just and impartial, short and seasonable: your evidence otherwise will not be considered as legal, and you will incur the same censure as Theopompus {67} did, who finds fault with everybody from enmity and ill-nature; and dwells so perpetually on this, that he seems rather to be an accuser than an historian. If anything occurs that is very extraordinary or incredible, you may mention without vouching for the truth of it, leaving everybody to judge for themselves concerning it: by taking no part yourself, you will remain safe. Remember, above all, and throughout your work, again and again, I must repeat it, that you write not with a view to the present times only, that the age you live in may applaud and esteem you, but with an eye fixed on posterity; from future ages expect your reward, that men may say of you, "that man was full of honest freedom, never flattering or servile, but in all things the friend of truth." This commendation, the wise man will prefer to all the vain hopes of this life, which are but of short duration.