Arthur Stanley Eddington's 'Philosophy of Physical Science' is a seminal work that delves into the profound philosophical underpinnings of modern physics. Eddington, a leading astrophysicist of his time, critically examines the nature of scientific knowledge, the relationship between objective reality and the observer, and the metaphysical implications of groundbreaking theories like relativity and quantum mechanics. He explores how our conceptual frameworks shape our understanding of the universe, arguing that the structure of our knowledge often mirrors the structure of the mind itself. This book offers a compelling bridge between scientific inquiry and philosophical thought, challenging readers to reconsider the very foundations of physical reality.