The book "Letters of David Ricardo to Thomas Robert Malthus, 1810-1823" is a valuable source for the study of economic thought of the 19th century. This collection of letters highlights the in-depth discussions between two prominent economists of the era, David Ricardo and Thomas Robert Malthus. Their discussions cover a wide range of issues related to economics, politics, rent theory and other key aspects of economic science. The reader will have the opportunity to become more familiar with the thinking of these great thinkers, which makes this book an indispensable resource for leading scholars of economic theory.