and an exclusive principle; it clings obstinately to some things, and
violently rejects others. And it must do so, in a great measure, or it
would act contrary to its own nature. It needs helps and stages in its
progress, and "all appliances and means to boot," which can raise it to
a partial conformity to truth and good (the utmost it is capable of) and
bring it into a tolerable harmony with the universe. By aiming at too
much, by dismissing collateral aids, by extending itself to the farthest
verge of the conceivable and possible, it loses its elasticity and
vigour, its impulse and its direction. The moralist can no more do
without the intermediate use of rules and principles, without the
'vantage ground of habit, without the levers of the understanding, than
the mechanist can discard the use of wheels and pulleys, and perform
every thing by simple motion. If the mind of man were competent to
comprehend the whole of truth and good, and act upon it at once, and
independently of all other considerations, Mr. Bentham's plan would be
a feasible one, and _the truth, the whole truth, and nothing but the
truth_ would be the best possible ground to place morality upon. But
it is not so. In ascertaining the rules of moral conduct, we must have
regard not merely to the nature of the object, but to the capacity of
the agent, and to his fitness for apprehending or attaining it. Pleasure
is that which is so in itself: good is that which approves itself as
such on reflection, or the idea of which is a source of satisfaction.
All pleasure is not, therefore (morally speaking) equally a good; for
all pleasure does not equally bear reflecting on. There are some tastes
that are sweet in the mouth and bitter in the belly; and there is a
similar contradiction and anomaly in the mind and heart of man. Again,
what would become of the _Posthaec meminisse juvabit_ of the poet, if
a principle of fluctuation and reaction is not inherent in the very
constitution of our nature, or if all moral truth is a mere literal
truism? We are not, then, so much to inquire what certain things are