people collectively cannot buy twice as much goods as before unless twice as much goods are produced, - Henry Hazlitt

The only way we could remember would be by constant re-reading, for knowledge unused tends to drop out of mind. Knowledge used does not need to be remembered; practice forms habits and habits make memory unnecessary. The rule is nothing; the application is everything.

The thing so great that “private capital could not have built it” has in fact been built by private capital — the capital that was expropriated in taxes

"Necessary policemen, firemen, street cleaners, health officers, judges, legislators and executives perform productive services as important as those of anyone in private industry. They make it possible for private industry to function in an atmosphere of law, order, freedom and peace. But their justification consists in the utility of their services. It does not consist in the "purchasing power" they possess by virtue of being on the public payroll."