Organismic biology presents a necessary conceptual shift away from mechanistic reductionism, which sees life only as a molecular machine. This theoretical framework emphasizes organisms as autonomous, integrated wholes, exhibiting specific properties irreducible to physicochemical laws. Key concepts include inherent agency, complex systems organization, and multilevel processing of energy and information. This new synthesis, central to modern systems biology and evolutionary theory, seeks a comprehensive, coherent understanding of life across all organizational levels.