"Four Introductory Lectures on Political Economy" is a book written by Nassau William Senior, a 19th century British economist and political figure. In this work, the author examines the main principles of political economy, highlights important aspects of capitalism, competition and market relations. Structured in the form of lectures, the book is an excellent introduction to the world of economic sciences for a wide range of readers. Senior presents complex economic concepts in a clear and accessible manner, making this book a valuable addition to the library of anyone interested in economics and society.