And even then…

This inability to live more than one tradition at a time means that in a crucial and, truth be told, rather sobering sense, even the central patterns of reasoning in one tradition—as that tradition understands them—will not be understood in another. Moreover, insofar as we do not participate in the alien tradition we seek to query, we cannot know what it is that we do not know. Short of conversion, we are literally shut out of one by the life we live in another. Rival rationalities are not surmountable by learning.—One True Life: The Stoics and Early Christians as Rival Traditions, 204

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And that should make us humble. And cause us to lower our expectations on what we can discover about the past. Part of it will always be unretrievable. No matter how much we dig up or how much we read, the past is still the past and much of it is beyond our grasp.
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