Drugs are not always necessary, but belief in recovery always is.
Classical economics is a broad term that refers to the dominant school of thought for economics in the 18th and 19th centuries. Most consider Scottish economist Adam Smith the progenitor of the classical economic theory. However, Spanish scholastics and French physiocrats made earlier contributions. Other notable contributors to classical economics include David Ricardo, Thomas Malthus, Anne Robert Jacques Turgot, John Stuart Mill, Jean-Baptiste Say, and Eugen Böhm von Bawerk.