M. Tullius Cicero Pro A. Cluentio 168

[168] I say that that young man, whom you say died the moment that he had drank that cup, did not die at all on that day. O great and impudent lie! Now see the rest of the truth. I say that he, having come to the dinner while labouring under an indigestion, and still, as people of that age often do, had not spared himself, was taken ill, continued ill some days, and so died. Who is my witness for this fact? The man who is a witness also of his own grief—his own father. The father, I say, of the young man himself: he, who, from his grief of mind, would have been easily inclined by even the slightest suspicion to appear as a witness against Aulus Cluentius, gives evidence in his favour. Read his evidence. But do you, unless it is too grievous for you, rise for a moment, and endure the pain which this necessary recollection of your trouble causes you; on which I will not dwell too long, since, as became a virtuous citizen, you have not allowed your own grief to be the cause of distress or of a false accusation to an innocent man. [The testimony of Balbutius the father is read.]