What will be, will be.
~ Spanish Proverb [19244]

The exact source of this saying is still up for debate, but it is generally accepted as being Spanish in origin. Similar variations have evidence in Latin, Italian & Yiddish. It first appeared in English in Christopher Marlowe's play Doctor Faustus.

Whatever the original source, its modern popularity is due to the hit song, Que Sera Sera (Whatever Will Be, Will Be). It became an instant hit when Doris Day sang it in Alfred Hitchcock's The Man Who Knew Too Much.

Written by Ray Evans and Jay Livingston, the chorus lines explain the proverb:

Que Sera Sera
Whatever will be will be
The future's not ours to see
Que Sera Sera
What will be will be