The face that launched a thousand ships
A reference to the mythological figure Helen of Troy (or some would say, to Aphrodite). Her abduction by Paris was said to be the reason for a fleet of a thousand ships to be launched into battle, initiating the Trojan Wars.
Christopher Marlowe, in Doctor Faustus (variously dated between 1590 and 1604), referring to Helen of Troy, or as Marlowe had it 'Helen of Greece':
Was this the face that launch'd a thousand ships
And burnt the topless towers of Ilium?
Sweet Helen, make me immortal with a kiss.