when corrupted either by a disease or some ill habit, does not change the
nature of other things, so neither can it change the nature of pleasure.

"They reckon up several sorts of pleasures, which they call true ones;
some belong to the body, and others to the mind. The pleasures of the
mind lie in knowledge, and in that delight which the contemplation of
truth carries with it; to which they add the joyful reflections on a well-
spent life, and the assured hopes of a future happiness. They divide the
pleasures of the body into two sorts--the one is that which gives our
senses some real delight, and is performed either by recruiting Nature
and supplying those parts which feed the internal heat of life by eating
and drinking, or when Nature is eased of any surcharge that oppresses it,
when we are relieved from sudden pain, or that which arises from
satisfying the appetite which Nature has wisely given to lead us to the
propagation of the species. There is another kind of pleasure that
arises neither from our receiving what the body requires, nor its being
relieved when overcharged, and yet, by a secret unseen virtue, affects
the senses, raises the passions, and strikes the mind with generous
impressions--this is, the pleasure that arises from music. Another kind
of bodily pleasure is that which results from an undisturbed and vigorous
constitution of body, when life and active spirits seem to actuate every
part. This lively health, when entirely free from all mixture of pain,
of itself gives an inward pleasure, independent of all external objects
of delight; and though this pleasure does not so powerfully affect us,
nor act so strongly on the senses as some of the others, yet it may be
esteemed as the greatest of all pleasures; and almost all the Utopians
reckon it the foundation and basis of all the other joys of life, since
this alone makes the state of life easy and desirable, and when this is
wanting, a man is really capable of no other pleasure. They look upon
freedom from pain, if it does not rise from perfect health, to be a state