There are a couple of exceptions,

当时确有一些异议
but even then he doesn't mention anybody,

但即便如此对于那些与他持有异见的人
who holds the view he's going to refute.

他也并未提及一二
He just puts forward the view.

他只提出了自己的观点
He gives the reader only the necessary facts and conclusions that

他向读者展示的是经过慎重调查谨慎思索
he has distilled from them after careful investigation and thought.

从这些异见中去伪存真的必要事实和结论
He has been so successful that for more than 2,400 years

他十分成功两千四百多年来
few readers have been aware that any other opinion existed.

很少有读者意识到不同的观点
But a careful reading of Thucydides himself and of a few other

但只要认真阅读修昔底德自己的著作以及
ancient sources shows that there were other opinions

一些其他古代史料便可发现修昔底德时代
in Thucydides' time and that his history is a powerful

确实有其他观点存在而他笔下的历史
and effective polemic against them.

都对他们进行了有力有效的辩驳