“A legal system is only the sum total of laws and that one only needs to identify a law” was propounded by

This definition - 'A legal system is only the sum total of laws and that one only needs to identify a law' - reflects John Austin's positivist approach. Austin viewed law as commands issued by a sovereign and backed by sanctions, emphasizing that law is a closed, logical system that can be identified through formal criteria. This stands in contrast to Bentham's utilitarian approach (more flexible), Salmond's sociological perspective, and Jhering's law-as-social-engineering view. Austin's definition is foundational to legal positivism and analytical jurisprudence.