In a free government almost all other rights would become worthless if the government possessed power over the private fortune of every citizen.
John MarshallWhen a law is in its nature a contract, when absolute rights have vested under that contract, a repeal of the law cannot divest those rights.
John MarshallAn unlimited power to tax involves, necessarily, a power to destroy; because there is a limit beyond which no institution and no property can bear taxation.
John Marshall