, are invincible.

The fifth proposition is the general deduction from the four former and
will consequently fall, as the foundations which support it have given
way. In the sense in which Mr Godwin understands the term
'perfectible', the perfectibility of man cannot be asserted, unless the
preceding propositions could have been clearly established. There is,
however, one sense, which the term will bear, in which it is, perhaps,
just. It may be said with truth that man is always susceptible of
improvement, or that there never has been, or will be, a period of his
history, in which he can be said to have reached his possible acme of
perfection. Yet it does not by any means follow from this, that our
efforts to improve man will always succeed, or even that he will ever
make, in the greatest number of ages, any extraordinary strides towards
perfection. The only inference that can be drawn is that the precise
limit of his improvement cannot possibly be known. And I cannot help
again reminding the reader of a distinction which, it appears to me,
ought particularly to be attended to in the present question: I mean,
the essential difference there is between an unlimited improvement and
an improvement the limit of which cannot be ascertained. The former is
an improvement not applicable to man under the present laws of his
nature. The latter, undoubtedly, is applicable.

The real perfectibility of man may be illustrated, as I have mentioned
before, by the perfectibility of a plant. The object of the
enterprising florist is, as I conceive, to unite size, symmetry, and
beauty of colour. It would surely be presumptuous in the most
successful improver to affirm, that he possessed a carnation in which
these qualities existed in the greatest possible state of perfection.
However beautiful his flower may be, other care, other soil, or other
suns, might produce one still more beautiful.

Yet, although he may be aware of the absurdity of supposing that he has
reached perfection, and though he may know by what means he attained
that degree of beauty in the flower which he at present possesses, yet
he cannot be sure that by pursuing similar means, rather increased in
strength, he will obtain a more beautiful blossom. By endeavouring to
improve one quality, he may impair the beauty of another. The richer
mould which he would employ to increase the size of his plant would
probably burst the calyx, and destroy at once its symmetry. In a
si