The distinction between positive and normative economics has been one of the most widely discussed topics in Economics. This distinction is crucial because it can greatly influence how we understand and theorize the roles and functions of Economics. Since the early 20th century, economists such as Pareto, Von Mises, Robbins, and later Friedman have played a major role in shaping the standard approach to this distinction. However, over the past three decades, many philosophers and historians of economics have challenged this conventional view, emphasizing the need to rethink the distinction. This course aim to explore various ways this distinction has been theorized. It will examine how influential figures such as Smith, Mill, Marx, and Walras approached this distinction before moving on to discussions from the early twentieth century to the present. This survey can contribute to new understandings of the distinction that take into account the lessons drawn from recent critical appraisals of the standard version of the distinction.