That the people have an original right to establish, for their future government, such principles as, in their opinion, shall most conduce to their own happiness, is the basis, on which the whole American fabric has been erected.... The principles, therefore, so established, are deemed fundamental. And as the authority, from which they proceed, is supreme ... they are designed to be permanent.... The powers of the legislature are defined, and limited; and that those limits may not be mistaken, or forgotten, the constitution is written.
John MarshallThe 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.
John MarshallThe federal government is acknowledged by all to be one of enumerated powers. The principle, that it can exercise only the powers granted to it . . . is now universally admitted.
John MarshallA corporation is an artificial being, invisible, intangible, and existing only in contemplation of law.
John MarshallThe institution of Masonry ought to be abandoned as one capable of much evil, and incapable of producing any good which might not be affected by safe and open means.
John MarshallState 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.
John Marshall