To urge the plea of ill-health or disablement is to blame disease and injury, not old age. Young men are often sickly, old men often vigorous. It is therefore not the old whom we should discourage, but the incapable. It is the capable whom [Sidenote: E] we should encourage, not the young. Aridaeus was young, and Antigonus old; but while Antigonus annexed nearly the whole of Asia, Aridaeus was like the ‘super’ upon the stage—a king with nothing to say, and a butt for whoever happened to be in power. To demand of the sophist Prodicus or the poet Philetas—who, young though they might be, were thin, sickly, and constantly taking to their beds through ill-health—that they should take up public life, were folly. But it were folly also to hinder old men like Phocion, or Masinissa the African, or the Roman Cato, from holding office or military command. The [Sidenote: F] Athenians being set upon an ill-timed war, Phocion ordered that every man under sixty should take up arms and serve. When this made them angry, he said, ‘There is no hardship. I, who am to be with you in command, am over eighty.’ And of Masinissa Polybius relates that he died when he was ninety, leaving a child of four, of whom he was the father. Shortly before his death he beat the Carthaginians in a great battle, [Sidenote: 792] and the next day was seen in front of his tent eating a loaf of cheap coarse bread. To expressions of surprise he answered that he did so to keep himself in training. _For like to goodly bronze, it shines in use, While a house crumbles, if left idle long_, says Sophocles. We may say the same of that glossy brightness of the mind, to which we owe calculation, memory, and sound judgement.