History of the Peloponnesian War

Now he that by the arguments here adduced shall frame a judgment of the things past and not believe rather that they were such as the poets have sung or prose-writers have composed, more delightfully to the ear than conformably to the truth, as being things not to be disproved and by length of time turned for the most part into the nature of fables without credit, but shall think them here searched out by the most evident signs that can be, and sufficiently too, considering their antiquity: he, I say, shall not err.

And though men always judge the present war wherein they live to be greatest, and when it is past, admire more those that were before it, yet if they consider of this war by the acts done in the same, it will manifest itself to be greater than any of those before mentioned.

What particular persons have spoken when they were about to enter into the war or when they were in it were hard for me to remember exactly, whether they were speeches which I have heard myself or have received at the second hand. But as any man seemed to me that knew what was nearest to the sum of the truth of all that had been uttered to speak most agreeably to the matter still in hand, so I have made it spoken here.

But of the acts themselves done in the war, I thought not fit to write all that I heard from all authors nor such as I myself did but think to be true, but only those whereat I was myself present and those of which with all diligence I had made particular inquiry.

And yet even of those things it was hard to know the certainty, because such as were present at every action spake not all after the same manner, but as they were affected to the parts or as they could remember.

To hear this history rehearsed, for that there be inserted in it no fables, shall be perhaps not delightful. But he that desires to look into the truth of things done and which (according to the condition of humanity) may be done again, or at least their like, he shall find enough herein to make him think it profitable. And it is compiled rather for an everlasting possession than to be rehearsed for a prize.