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?"