FUTURE, n. That period of time in which our affairs prosper, our friends are true, and our happiness is assured.

Ambrose Bierce (1842-1914?) American writer and journalist

“Future,” The Cynic’s Word Book (1906)
    (Source)

Included in The Devil's Dictionary (1911). Originally published in the "Devil's Dictionary" column in the San Francisco Wasp (1885-02-21).