It is emphatically the province and duty of the judicial department to say what the law is...If two laws conflict with each other, the courts must decide on the operation of each...This is of the very essence of judicial duty.

The French Revolution will be found to have had great influence on the strength of parties, and on the subsequent political transactions of the United States.

The law does not expect a man to be prepared to defend every act of his life which may be suddenly and without notice alleged against him.

What is it that makes us trust our judges? Their independence in office and manner of appointment.

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 constitution is either a superior paramount law, unchangeable by ordinary means, or it is on a level with ordinary legislative acts, alterable when the legislature shall please to alter it. It is emphatically the province and duty of the judicial department to say what the law is. This is the very essence of judicial duty.

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.