Law is defined as a system of rules that regulates behavior and is usually enforced through institutions. It establishes what must, may, and may not be done. To be considered law, rules must be recognized and binding by the state and have enforcement through consequences like punishment. For a law to be just it should uphold principles like equality, uniformity, certainty, generality, authority, and reasonableness. Legal personality allows entities like corporations to be treated as a single legal person separate from individual members or shareholders.