Flavius Josephus, The Wars of the Jews
William Whiston, A.M., Ed.

[207] Upon this, Vespasian, when he saw the Romans distressed by these sallies, (though they were ashamed to be made to run away by the Jews; and when at any time they made the Jews run away, their heavy armor would not let them pursue them far; while the Jews, when they had performed any action, and before they could be hurt themselves, still retired into the city,) ordered his armed men to avoid their onset, and not fight it out with men under desperation, while nothing is more courageous than despair; but that their violence would be quenched when they saw they failed of their purposes, as fire is quenched when it wants fuel; and that it was proper for the Romans to gain their victories as cheap as they could, since they are not forced to fight, but only to enlarge their own dominions. So he repelled the Jews in great measure by the Arabian archers, and the Syrian slingers, and by those that threw stones at them, nor was there any intermission of the great number of their offensive engines. Now the Jews suffered greatly by these engines, without being able to escape from them; and when these engines threw their stones or javelins a great way, and the Jews were within their reach, they pressed hard upon the Romans, and fought desperately, without sparing either soul or body, one part succoring another by turns, when it was tired down.