An oracle is a person or agency considered to be a source of wise counsel or prophetic opinion; an infallible authority, usually spiritual in nature. It can also be a prediction of the future, from the gods, that is spoken through another object or life-form. In the ancient world many sites gained a reputation for the dispensing of oracular wisdom: they too became known as "oracles", as did the oracular utterances themselves, whose very name is derived from the Latin verb orare, to speak.

The Oracle at Delphi