… is from page 234 of the 1969 Revised Edition of Lon Fuller’s profoundly important 1964 book, The Morality of Law:
Fidelity to the Rule of Law demands not only that a government abide by its verbalized and publicized rules, but also that it respect the justified expectations created by its treatment of situations not controlled by explicitly announced rules.
DBx: Yes. Law is not confined to the meaning of the words that government inscribes on paper. Indeed, words inscribed by government on paper are not necessarily law (as opposed to legislation) at all, and certainly the law in its fullness can never possibly be written down.