ses immediately on our attention. He
that shall peruse the political pamphlets of any past reign, will wonder
why they were so eagerly read, or so loudly praised. Many of the
performances which had power to inflame factions, and fill a kingdom
with confusion, have now very little effect upon a frigid critick; and
the time is coming, when the compositions of later hirelings shall lie
equally despised. In proportion as those who write on temporary
subjects, are exalted above their merit at first, they are afterwards
depressed below it; nor can the brightest elegance of diction, or most
artful subtilty of reasoning, hope for so much esteem from those whose
regard is no longer quickened by curiosity or pride.

It is, indeed, the fate of controvertists, even when they contend for
philosophical or theological truth, to be soon laid aside and slighted.
Either the question is decided, and there is no more place for doubt and
opposition; or mankind despair of understanding it, and grow weary of
disturbance, content themselves with quiet ignorance, and refuse to be
harassed with labours which they have no hopes of recompensing with
knowledge.

The authors of new discoveries may surely expect to be reckoned among
those whose writings are secure of veneration: yet it often happens that
the general reception of a doctrine obscures the books in which it was
delivered. When any tenet is generally received and adopted as an
incontrovertible principle, we seldom look back to the arguments upon
which it was first established, or can bear that tediousness of
deduction, and multiplicity of evidence, by which its author was forced
to reconcile it to prejudice, and fortify it in the weakness of novelty
against obstinacy and envy.

It is well known how much of our philosophy is derived from Boyle's
discovery of the qualities of the air; yet of those who now adopt or
enlarge his theory, very few have read the detail of his experiments.
His name is, indeed, reverenced; but his works are neglected; we are
contented to know, that he conquered his opponents, without inquiring
what cavils were produced against him, or by what proofs they were
confuted.

Some writers apply themselves to studies boundless and inexhaustible, as
experiments in natural philosophy. These are always lost in successive
compilations, as new advances are made, and former observations become
more familiar. Others spend their lives in remarks on language, or
explanations