The good parts are timeless advice. Tax consumption progressively to re-direct resources to high- value public expenditure, staving off defeat in a war only being an extreme case of high-value public expenditure. Rather than actual forced saving (Keynes's differed payments) I'd encourage saving by giving tax credits to the long-term saving of low-income people. [A progressive consumption tax already gives high-income people a strong incentive to save.]
The good parts are timeless advice. Tax consumption progressively to re-direct resources to high- value public expenditure, staving off defeat in a war only being an extreme case of high-value public expenditure. Rather than actual forced saving (Keynes's differed payments) I'd encourage saving by giving tax credits to the long-term saving of low-income people. [A progressive consumption tax already gives high-income people a strong incentive to save.]