Flavius Josephus,
The Wars of the Jews; Or, The History of the Destruction of Jerusalem
“ Nay, the Romans are sensible how that matter stands well enough. It is a brave thing to die in war; but so that it be according to the law of war, by the hand of conquerors. If, therefore, I avoid death from the sword of the Romans, I am truly worthy to be killed by my own sword, and my own hand; but if they admit of mercy, and would spare their enemy, how much more ought we to have mercy upon ourselves, and to spare ourselves? For it is certainly a foolish thing to do that to ourselves which we quarrel with them for doing to us. I confess freely that it is a brave thing to die for liberty ”
