There lies the Holy Grail.

-MacArthur, Douglas
  Remark, 6 May, one year after the fall of Corregidor to the Japanese, recalled in  A Soldier Speaks.

   'Butonethyng begyledus, that wemyght nat setheHoly Grayle hit was so preciously coverde.Wherefore I woll make here a vow that to-morne, withoute longer abydynge,I shall laboure in the queste of the Sankgreall.'

-Malory, SirThomas   d.1471
c.1470  Sir Gawain. Morte d'Arthur, bk.13, ch.7.