India has a diverse legal system vividly incorporates formal and informal law sources, including municipal and international aspects. The legal framework of any society is the foundational structure that underpins the functioning of the entire legal system. It represents a complex and intricate blend of rules, norms, and principles that collectively serve as the guiding force governing the behaviour of individuals within that society. These legal rules and principles are analogous to the structural supports of a building, providing the necessary stability and order for the functioning of the social and legal architecture. In essence, the legal framework serves as a blueprint, defining the boundaries, obligations, and rights individuals must abide by, thus ensuring order, justice, and social harmony. This notes describes about the formal and informal sources of law.

Law has become a significant medium for every civilized nation. Theory and philosophy of law is called jurisprudence. Jurisprudence should always be the foundation for framing rules and laws of a nation. Law is a dynamic subject which changes with the changing needs of the society. Philosophers and Jurists have come up with different definitions of law in different eras. Nature of law has also been propounded differently by different jurists. John Locke's theory on Constitutionalism is worth mentioning in present day context because the theory of Constitutionalism is associated with the noble idea which means freedom from arbitrary government . This concept encourages protection/promotions of rights of people, rule of law and accountable governmental procedures. A country which lacks constitutionalism is a dangerous sign which should always be discouraged.