History of the Peloponnesian War

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.