Natural law is a philosophical concept that suggests there are inherent laws and moral principles derived from nature and human reason. It posits that these laws are universal and can be understood through human intellect, regardless of societal or cultural differences. Natural law serves as a foundation for determining what is right and wrong, influencing legal systems and ethical standards. Historically, thinkers like Aristotle and Thomas Aquinas contributed to the development of natural law theory. They argued that human beings possess an innate understanding of justice and morality, which can guide behavior and inform laws. This idea continues to impact discussions in ethics, politics, and law today.