It's just the normal past tense. The author is writing about things that happened, or were true, in the past.
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TakaWhy do you think the 'were' in bold is the past form?There's a conditional-like structure hiding in there.
TakaAnd Jim, strictly it's not 'even while our principles were wrong'; it's 'even while admitting that our principles were wrong=even while we admit that our principles were wrong (i.e the 'were' is in the that-clause of 'admit(ting)).But you can easily add that to the paraphrase:
CalifJimAnd we can say this, even while/if our principles, by our own admission, were wrong.
even while/if our principles, by our own admission, were wrong
You could also paraphrase it as
if you wanted to preserve that subjunctive idea throughout.
dimsumexpress
I have not completely read through the texts. But could it be possible that "were" referred to the "principles", or "beliefs" of time gone by?