Actor qui contra regulam quid adduxit, non est audiendus. He ought not to be heard who advances a proposition contrary to the rules of law.

Actor sequitur forum¹ rei. The plaintiff must follow the forum of the thing in dispute.

Actore non probante reus absolvitur. When the plaintiff does not prove his case, the defendant² is absolved³.

Actus Dei nemini facit injuriam. The act of God does no injury; that is, no one is responsible for inevitable⁴ accidents. 2 Blacks. Com. 122. See Act of God.

Actus incaeptus cujus perfectio pendet, ex voluntate partium, revocari potest; si autem pendet ex voluntate tertia personae, vel ex contingenti, revocari non potest. An act already begun, the completion of which depends upon the will of the parties, may be recalled; but if it depend on the consent of a third person, or of a contingency⁵, it cannot be recalled. Bacon's Max. Reg. 20.

Actus me invito factus, non est meus actus. An act done by me against my will, is not my act.

Actus non reum facit, nisi mens sit rea. An act does not make a person guilty, unless the intention be also guilty. This maxim⁶ applies only to criminal cases; in civil matters it is otherwise. 2 Bouv. Inst. n. 2211.

Actus legitimi non recipiunt modum. Acts required by law to be done, admit of no qualification. Hob. 153.

Actus legis nemini facit injuriam, The act of the law does no one an injury. 5 Co. 116.

Ad proximum antecedens fiat⁷ relatio, nisi impediatur sententia. The antecedent bears relation to what follows next, unless it destroys the meaning of the sentence.

Ad quaestiones facti non respondent judices; ad quaestione legis non respondent juratores. The judges do not answer to questions of fact; the jury do not answer to questions of law. Cu. Litt. 295.

Aestimatio praeteriti delicti ex postremo facto nunquam crescit. The estimation of a crime committed never increased from a subsequent fact. Bac. Max. Reg. 8.

Ambiguitas verborum latens verificatione suppletur; nam quod exfacto oritur ambiguum verificatione facti tollitur. A hidden ambiguity⁸ of the words is supplied by the verification, for whatever ambiguity arises concerning the deed itself is removed by the verification of the deed. Bacon's Max. Reg. 23.