For the power given to Congress by the Constitution does not extend to the internal regulation of the commerce of a State (that is to say, of the commerce between citizen and citizen,) which remain exclusively with its own legislature; but to its external commerce only, that is to say, its commerce with another State, or with foreign nations, or with the Indian tribes.
Thomas JeffersonTo be really useful, we must keep pace with the state of society, and not dishearten it by attempts at what its population, means, or occupations will fail in attempting.
Thomas JeffersonIf virtuous, the government need not fear the fair operation of attack and defense. Nature has given to man no other means of sifting the truth, either in religion, law, or politics.
Thomas JeffersonIt would reduce the whole instrument to a single phrase, that of instituting a Congress with power to do whatever would be for the good of the United States; and as they would be the sole judges of the good or evil, it would be also a power to do whatever evil they please . . . . Certainly no such universal power was meant to be given them. It [the Constitution] was intended to lace them up straightly within the enumerated powers and those without which, as means, these powers could not be carried into effect.
Thomas Jefferson