We consider public debt from a long-term historical perspective, showing how the purposes for which governments borrow have evolved over time. Periods when debt-to-GDP ratios rose explosively as a result of wars, depressions and financial crises also have a long history. Many of these episodes...

Debt in service of the state -- States and the limits of borrowing -- Democratization and globalization -- Caveat emptor -- Managing problem debts -- Successful consolidation -- Warfare to welfare -- Cycles of debt -- Oil and water -- Missed opportunities -- Debt to the rescue -- COVID-19.