Anything done, or said; an act or action; an actual occurrence; a circumstance; whatever comes to pass; an event.

Subjects of jurisprudence are facts and laws: facts are the source and cause of laws. From facts proceed rights and wrongs. By fact is meant anything the subject of testimony. Perception is a fact. If any emotion is felt, as joy, grief, anger, the feeling is a fact. If the operation of the mind is productive of an effect, as intention, knowledge, skill, the possession of this effect is a fact. If any proposition be true, whatever is affirmed or denied in it is a fact.

"Fact" and "truth" are often used in common parlance as synonymous; as employed in pleadings they are widely different. A fact in pleading is a circumstance, act, event or incident; a truth is a legal principle which declares or governs the facts and their operative effect.

William C. Anderson
William C. Anderson,
? – ?
Dictionary of Law. Chicago, 1889.

A judge is not supposed to know anything about the facts of life until they have been presented in evidence, and explained to him at least three times.