Appendix III. — The Maxims of the Law
Legal maxims are the proverbs of the law. They have the same merits and defects as other proverbs, being brief and pithy statements of partial truths. They express general principles without the necessary qualifications and exceptions, and they are therefore much too absolute to be taken as trustworthy guides to the law. Yet they are not without their uses. False and misleading when literally read, these established formulae provide useful means for the expression of leading doctrines of the law in a form which is at the same time brief and intelligible. They constitute a species of legal shorthand, useful to the lawyer, but dangerous to any one else; for they can be read only in the light of expert knowledge of that law of which they are the elliptical expression.
The language of legal maxims is almost invariably Latin, for they are commonly derived from the civil law, either literally or by adaptation, and most of those which are not to be found in the Roman sources are the invention of medieval jurists. The following is a list of the more familiar and important of them, together with brief comments and references.