In an era of economic uncertainty, political polarization, and technological transformation, understanding the roots of economic thought has never been more essential. The Battle of Ideas is not a textbook-it is an intellectual expedition through the minds that have shaped our world. This book was born out of both curiosity and necessity: a desire to grasp how seemingly abstract theories can ripple through societies, build empires, or collapse markets. It is for the thinker, the skeptic, the student, the entrepreneur-anyone who has ever asked, "Where do these ideas come from, and why do they matter?"