The Iliad 10.227–233

fain was the son of Atreus, Menelaus, famed for his spear, and fain too was the stead-fast Odysseus to steal into the throng of the Trojans, for ever daring was the spirit in his breast. Then among them spake the king of men, Agamemnon: Diomedes, son of Tydeus, dear to my heart,that man shalt thou choose as thy comrade, whomsoever thou wilt, the best of them that offer themselves, for many are eager. And do not thou out of reverent heart leave the better man behind, and take as thy comrade one that is worse, yielding to reverence, and looking to birth, nay, not though one be more kingly.