Where did the English title for Marcel Proust’s A la recherche du temps perdu (1913-27) come from?

C. K. Scott Moncrieff took the title Remembrance of Things Past for his 1922 English translation of Proust from Shakespeare’s Sonnet 30:

“When to the sessions of sweet silent thought/I summon up remembrance of things past.” The literal translation of Proust’s title is “In Search of Lost Time.”