Third Philippic (41)

That this is so, you surely see for yourselves with regard to the present, and you need no evidence of mine, but that it was the opposite in the days of old I will prove, not in my own words, but by the written record of your ancestors, which they engraved on a bronze pillar and set up in the Acropolis. It was not for their own use, for without these documents their instinct was right; but it was that you might have these examples to remind you that such cases ought to be regarded seriously.