— Also termed consuetudinary law.
“In contrast with the statute, customary law may be said to exemplify implicit law. Let us, therefore, describe customary law in terms that will reveal to the maximum this quality of implicitness. A custom is not declared or enacted, but grows or develops through time. The date when it first came into full effect can usually be assigned only within broad limits. Though we may be able to describe in general the class of persons among whom the custom has come to prevail as a standard of conduct, it has no definite author; there is no person or defined human agency we can praise or blame for its being good or bad. There is no authoritative verbal declaration of the terms of the custom; it expresses itself not in a succession of words, but in a course of conduct.” Lon L. Fuller, Anatomy of the Law 71 (1968).
