This paper studies optimal financial policy in a world where the financial sector can become excessively optimistic. I decompose the welfare effects of bank capital regulation to demonstrate the effects of exuberance and its interaction with incentive problems in banking. The optimal policy...

We use daily transactional ledger data from the Bank of England's Archive to test whether and to what extent the Bank of England during the mid-nineteenth century adhered to Walter Bagehot's rule that a central bank in a financial crisis should lend cash freely at a high interest rate in...