These, my lords, are three essentials which the wisdom of our ancestors has made indispensable previous to the arrest or imprisonment of the meanest Briton; it must appear, that there is a crime committed, that the person to be seized is suspected of having committed it, and that the suspicion is founded upon probability. Requisites so reasonable in their own nature, so necessary to the protection of every man's quiet and reputation, and, by consequence, so useful to the security and happiness of society, that, I suppose, they will need no support or vindication. Every man is interested in the continuance of this method of proceeding, because no man is secure from suffering by the interruption or abolition of it. Such, my lords, is the care and caution which the law directs in the first part of any criminal process, the detainment of the person supposed guilty; nor is the method of trial prescribed with less regard to the security of innocence. It is an established maxim, that no man can be obliged to accuse himself, or to answer any questions which may have any tendency to discover what the nature of his defence requires to be concealed. His guilt must appear either by a voluntary and unconstrained confession, which the terrours of conscience have sometimes extorted, and the notoriety of the crime has at other times produced, or by the deposition of such witnesses as the jury shall think worthy of belief. To the credibility of any witness it is always requisite that he be disinterested, that his own cause be not involved in that of the person who stands at the bar, that he has no prospect of advancing his fortune, clearing his reputation, or securing his life. For it is made too plain by daily examples, that interest will prevail over the virtue of most men, and that it is not safe to believe those who are strongly tempted to deceive. There are cases, my lords, where the interest of the person offering his evidence is so apparent, that he is not even admitted to be heard; and any benefit which may possibly be proposed, is admitted as an objection to evidence, and weakens it in a measure proportionate to the distance of the prospect and the degree of profit. Such are the rules hitherto followed in criminal proceedings, the violation of which has been always censured as cruelty and oppression, and perhaps always been repented even by those who proposed and defended it, when the commotions of party have subsided, and the heat of opposition and resentment has given way to unprejudiced reflection. Of these rules, my lords, it is not necessary to produce any defence from the practice of distant nations, because it is sufficient in the present case, that they are established by the constitution of this country, to which every Briton has a right to appeal; for how can any man defend his conduct, if having acted under one law, he is to be tried by another?