 So, he simply turns pale and silent when he learns of Lancelot's affair with Guinevere in the "Mort Artu", whilst in "Yvain, the Knight of the Lion", he is unable to stay awake after a feast and has to retire for a nap.Nonetheless, as Norris J.Lacy has observed, whatever his faults and frailties may be in these Arthurian romances, "his prestige is never—or almost never—compromised by his personal weaknesses ... his authority and glory remain intact."