What is Legal Logic?

Abstract

That the question what is legal logic should still arise today appears paradoxical, for law is after all one of the oldest of human disciplines and logic has in the twentieth century become one of the most developed of the disciplines of contemporary philosophy. Yet comparison of a number of recent works dealing with the subject, all of which, not being without merit, have enjoyed a measure of success, is enough to show that the problem exists and is even strongly disputed.Of four such works, two—those by E. Levi and K. Engisch—do not use the word “logic” in their titles, though they deal with legal reasoning and legal thought. The other two, on the contrary, expressly purport to deal with legal logic. Strangely enough, however, their authors explicitly deny the specific existence of such a discipline, whereas Levi and Engisch underscore, without any hesitation, the specific nature of legal reasoning and the existence of a particular logic, legal logic.Thus in the first paragraph of his work, where Klug attempts to define the concept of legal logic, he states that it comprises the study of the rules of formal logic as used in the judicial application of rules of law (p. 6); that legal logic is therefore practical logic, consisting of the application to law of the rules of pure or theoretical logic which is general logic (p. 7).