The final cause of law is the welfare of society.
There are vogues and fashions in jurisprudence as in literature and art and dress.
Rest and motion, unrelieved and unchecked, are equally destructive.
Law never is, but is always about to be.
Opinion has a significance proportioned to the sources that sustain it.
It is for ordinary minds, not for psychoanalysts, that our rules of evidence are framed. They have their source very often in considerations of administrative convenience, or practical expediency, and not in rules of logic.