The abhorrence of society to the use of involuntary confessions does not turn alone on their inherent untrustworthiness. It also turns on the deep-rooted feeling that the police must obey the law while enforcing the law; that, in the end, life and liberty can be as much endangered from illegal methods used to convict those thought to be criminals as from the actual criminals themselves.
Belief is involuntary; nothing involuntary is meritorious or reprehensible. A man ought not to be considered worse or better for his belief.Percy Bysshe Shelley
All beginnings are involuntary.
Convictions following the admission into evidence of confessions which are involuntary, i.e., the product of coercion, either physical or psychological, cannot stand. This is so not because such confessions are unlikely to be true but because the methods used to extract them offend an underlying principle in the enforcement of our criminal law: that ours is an accusatorial and not an inquisitorial system a system in which the State must establish guilt by evidence independently and freely secured and may not by coercion prove its charges against an accused out of his own mouth.felix frankfurter