All presumptive evidence of felony should be admitted cautiously; for the law holds it better that ten guilty persons escape, than that one innocent … - William Blackstone

It is better that ten guilty persons escape, than that one innocent suffer.

Law, in its most general and comprehensive sense, signifies a rule of action; and is applied indiscriminately to all kinds of action, whether animate, or inanimate, rational or irrational. Thus we say, the laws of motion, of gravitation, of optics, or mechanics, as well as the laws of nature and of nations. And it is that rule of action, which is prescribed by some superior, and which the inferior is bound to obey.

What they do, no authority upon earth can undo.

Of crimes injurious to the persons of private subjects, the most principal and important is the offense of taking away that life, which is the immediate gift of the great creator; and which therefore no man can be entitled to deprive himself or another of, but in some manner either expressly commanded in, or evidently deducible from, those laws which the creator has given us; the divine laws, I mean, of either nature or revelation.