[201] In the heroic times, it is not unfrequent for the king to receive presents to purchase freedom from his wrath, or immunity from his exactions. Such gifts gradually became regular, and formed the income of the German, (Tacit. Germ. Section 15) Persian, (Herodot. iii.89), and other kings. So, too, in the middle ages, ‘The feudal aids are the beginning of taxation, of which they for a long time answered the purpose.’ (Hallam, Middle Ages, ch. x. pt. 1, p. 189) This fact frees Achilles from the apparent charge of sordidness. Plato, however, (De Rep. vi. 4), says, “We cannot commend Phœnix, the tutor of Achilles, as if he spoke correctly, when counselling him to accept of presents and assist the Greeks, but, without presents, not to desist from his wrath, nor again, should we commend Achilles himself, or approve of his being so covetous as to receive presents from Agamemnon,” &c.