aution and investigation are a necessary armor against
error and imposition. But this untractableness may be carried too far,
and may degenerate into obstinacy, perverseness, or disingenuity.
Though it cannot be pretended that the principles of moral and political
knowledge have, in general, the same degree of certainty with those of
the mathematics, yet they have much better claims in this respect than,
to judge from the conduct of men in particular situations, we should be
disposed to allow them. The obscurity is much oftener in the passions
and prejudices of the reasoner than in the subject. Men, upon too many
occasions, do not give their own understandings fair play; but, yielding
to some untoward bias, they entangle themselves in words and confound
themselves in subtleties.

How else could it happen (if we admit the objectors to be sincere in
their opposition), that positions so clear as those which manifest the
necessity of a general power of taxation in the government of the Union,
should have to encounter any adversaries among men of discernment?
Though these positions have been elsewhere fully stated, they will
perhaps not be improperly recapitulated in this place, as introductory
to an examination of what may have been offered by way of objection to
them. They are in substance as follows:

A government ought to contain in itself every power requisite to the
full accomplishment of the objects committed to its care, and to the
complete execution of the trusts for which it is responsible, free from
every other control but a regard to the public good and to the sense of
the people.

As the duties of superintending the national defense and of securing the
public peace against foreign or domestic violence involve a provision
for casualties and dangers to which no possible limits can be assigned,
the power of making that provision ought to know no other bounds than
the exigencies of the nation and the resources of the community.

As revenue is the essential engine by which the means of answering
the national exigencies must be procured, the power of procuring that
article in its full extent must necessarily be comprehended in that of
providing for those exigencies.

As theory and practice conspire to prove that the power of procuring
revenue is unavailing when exercised over the States in their collective
capacities, the federal government must of necessity be invested with an
unqualified power of taxation in th