Tadeusz Kowalik lived through ten decades and three economic and political systems in Poland. He combined his academic study of economic ideas with his socialist ideals of building a fairer and more just society. This book covers the intellectual and political work of Kowalik, within the context of modern Polish history. Kowalik was part of a Polish School of critical left-wing political economists, that included Michal Kalecki and Oskar Lange. Kowalik contributed to the body of work produced by this group, which included his interpretation of their work. Kowalik participated in some of the most momentous events in post-war Polish history, helping to organise a group of intellectuals to advise the shipyard workers at the Gdansk shipyards in 1980. He became a vehement opponent of Poland's neoliberal form of capitalism and left a body of work that illuminates our understanding of capitalism and socialism today.