Hans Kelsen

"Law is an order of human behavior. An “order” is a system of rules. Law is not, as it is sometimes said, a rule. It is a set of rules having the kind of unity we understand by a system. It is impossib…"

"Justice is primarily a possible, but not a necessary, quality of a social order regulating the mutual relations of men. Only secondarily it is a virtue of man, since a man is just, if his behavior con…"

"One of the most important elements of Christian religion is the idea that justice is an essential quality of God. Since God is the absolute, his justice must be absolute justice, that is to say, etern…"

"By determining law — so far as it is the subject of a specific science of law — as norm, it is delimited against nature; and science of law against natural science. But in addition to legal norms, the…"

"The mark of Platonic philosophy is a radical dualism. The Platonic world is not one of unity; and the abyss which in many ways results from this bifurcation appears in innumerable forms. It is not one…"

"It is called a “pure” theory of law, because it only describes the law and attempts to eliminate from the object of this description everything that is not strictly law: Its aim is to free the science…"