The purpose of law is to regulate various aspects of social life. Most theories of law elevate just one of these functions of the law to a universal or supreme level, whilst turning a blind eye to the others. Stig Jørgensen argues that any plausible theory of law must take into account all relationships of law, covering language interpretation of rules and facts, contradiction and arbitrariness, teleological legal argumentation, concept of equality, and morality. The concept of Justice is later isolated showing the primary human need to believe in a final weighing up of one's actions or failures.