The power to tax is the power to destroy.

Have no power, by taxation or otherwise, to retard, impede, burden or in any manner control the operations of the constitutional laws enacted by Congress.

State inspection laws, health laws, and laws for regulating the internal commerce of a State, and those which respect turnpike roads, ferries, &c. are not within the power granted to Congress. ... Inspection laws, quarantine laws, health laws of every description, as well as laws for regulating the internal commerce of a State, and those which respect turnpike roads, ferries, &c., are component parts of this mass. No direct general power over these objects is granted to Congress, and, consequently, they remain subject to State legislation.

The people made the Constitution, and the people can unmake it. It is the creature of their own will, and lives only by their will.

To obtain a just compromise, concession must not only mutual-it must be equal also....There can be no hope that either will yield more than it gets in return.

In a free government almost all other rights would become worthless if the government possessed power over the private fortune of every citizen.

The power to tax is the power to destroy.