In his seminal work, biologist Ludwig von Bertalanffy outlines a theory of systems that breaks down disciplinary boundaries and argues that there are general principles and laws applicable to systems of all kinds. He contends that phenomena should be viewed not in isolation but as components of systems interacting with their environments. Bertalanffy proposes that there are commonalities across biological, physical, and social systems that can be explored through systems thinking. He suggests the need for an overarching systems science to uncover these universal system principles. The book develops key concepts like open and closed systems, steady states, growth, feedback, homeostasis, differentiation, hierarchy, and emergence. General System Theory was groundbreaking in its interdisciplinary approach and helped foster the growth of systems theory across academia and society.