The Principles of Physiology (Herbert Spencer)

Herbert Spencer’s Principles of Physiology describe how living organisms, including humans, function as integrated systems. He proposed that the body operates through coordination of various parts—nerves, muscles, organs—working together to maintain life. This organization ensures processes like circulation, respiration, and digestion support the organism's health and survival. Spencer emphasized that these physiological mechanisms are interconnected, adapting to internal and external changes, much like an interconnected network ensuring stability. His principles highlight the complexity and harmony within living systems, illustrating how each component contributes to the overall functioning and resilience of the organism.