on liberty-第7章
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the other are no worse than they are? Not certainly to the inherent
force of the human understanding; for; on any matter not self…evident;
there are ninety…nine persons totally incapable of judging of it for
one who is capable; and the capacity of the hundredth person is only
comparative; for the majority of the eminent men of every past
generation held many opinions now known to be erroneous; and did or
approved numerous things which no one will now justify。 Why is it;
then; that there is on the whole a preponderance among mankind of
rational opinions and rational conduct? If there really is this
preponderance… which there must be unless human affairs are; and have
always been; in an almost desperate state… it is owing to a quality
of the human mind; the source of everything respectable in man
either as an intellectual or as a moral being; namely; that his errors
are corrigible。 He is capable of rectifying his mistakes; by
discussion and experience。 Not by experience alone。 There must be
discussion; to show how experience is to be interpreted。 Wrong
opinions and practices gradually yield to fact and argument; but facts
and arguments; to produce any effect on the mind; must be brought
before it。 Very few facts are able to tell their own story; without
comments to bring out their meaning。 The whole strength and value;
then; of human judgment; depending on the one property; that it can be
set right when it is wrong; reliance can be placed on it only when the
means of setting it right are kept constantly at hand。 In the case
of any person whose judgment is really deserving of confidence; how
has it become so? Because he has kept his mind open to criticism of
his opinions and conduct。 Because it has been his practice to listen
to all that could be said against him; to profit by as much of it as
was just; and expound to himself; and upon occasion to others; the
fallacy of what was fallacious。 Because he has felt; that the only way
in which a human being can make some approach to knowing the whole
of a subject; is by hearing what can be said about it by persons of
every variety of opinion; and studying all modes in which it can be
looked at by every character of mind。 No wise man ever acquired his
wisdom in any mode but this; nor is it in the nature of human
intellect to become wise in any other manner。 The steady habit of
correcting and completing his own opinion by collating it with those
of others; so far from causing doubt and hesitation in carrying it
into practice; is the only stable foundation for a just reliance on
it: for; being cognisant of all that can; at least obviously; be
said against him; and having taken up his position against all
gainsayers… knowing that he has sought for objections and
difficulties; instead of avoiding them; and has shut out no light
which can be thrown upon the subject from any quarter… he has a right
to think his judgment better than that of any person; or any
multitude; who have not gone through a similar process。
It is not too much to require that what the wisest of mankind; those
who are best entitled to trust their own judgment; find necessary to
warrant their relying on it; should be submitted to by that
miscellaneous collection of a few wise and many foolish individuals;
called the public。 The most intolerant of churches; the Roman Catholic
Church; even at the canonisation of a saint; admits; and listens
patiently to; a 〃devil's advocate。〃 The holiest of men; it appears;
cannot be admitted to posthumous honours; until all that the devil
could say against him is known and weighed。 If even the Newtonian
philosophy were not permitted to be questioned; mankind could not feel
as complete assurance of its truth as they now do。 The beliefs which
we have most warrant for have no safeguard to rest on; but a
standing invitation to the whole world to prove them unfounded。 If the
challenge is not accepted; or is accepted and the attempt fails; we
are far enough from certainty still; but we have done the best that
the existing state of human reason admits of; we have neglected
nothing that could give the truth a chance of reaching us: if the
lists are kept open; we may hope that if there be a better truth; it
will be found when the human mind is capable of receiving it; and in
the meantime we may rely on having attained such approach to truth
as is possible in our own day。 This is the amount of certainty
attainable by a fallible being; and this the sole way of attaining it。
Strange it is; that men should admit the validity of the arguments
for free discussion; but object to their being 〃pushed to an extreme〃;
not seeing that unless the reasons are good for an extreme case;
they are not good for any case。 Strange that they should imagine
that they are not assuming infallibility; when they acknowledge that
there should be free discussion on all subjects which can possibly
be doubtful; but think that some particular principle or doctrine
should be forbidden to be questioned because it is so certain; that
is; because they are certain that it is certain。 To call any
proposition certain; while there is any one who would deny its
certainty if permitted; but who is not permitted; is to assume that we
ourselves; and those who agree with us; are the judges of certainty;
and judges without hearing the other side。
In the present age… which has been described as 〃destitute of
faith; but terrified at scepticism〃… in which people feel sure; not
so much that their opinions are true; as that they should not know
what to do without them… the claims of an opinion to be protected
from public attack are rested not so much on its truth; as on its
importance to society。 There are; it is alleged; certain beliefs so
useful; not to say indispensable; to well…being that it is as much the
duty of governments to uphold those beliefs; as to protect any other
of the interests of society。 In a case of such necessity; and so
directly in the line of their duty; something less than
infallibility may; it is maintained; warrant; and even bind;
governments to act on their own opinion; confirmed by the general
opinion of mankind。 It is also often argued; and still oftener
thought; that none but bad men would desire to weaken these salutary
beliefs; and there can be nothing wrong; it is thought; in restraining
bad men; and prohibiting what only such men would wish to practise。
This mode of thinking makes the justification of restraints on
discussion not a question of the truth of doctrines; but of their
usefulness; and flatters itself by that means to escape the
responsibility of claiming to be an infallible judge of opinions。
But those who thus satisfy themselves; do not perceive that the
assumption of infallibility is merely shifted from one point to
another。 The usefulness of an opinion is itself matter of opinion:
as disputable; as open to discussion; and requiring discussion as much
as the opinion itself。 There is the same need of an infallible judge
of opinions to decide an opinion to be noxious; as to decide it to
be false; unless the opinion condemned has full opportunity of
defending itself。 And it will not do to say that the heretic may be
allowed to maintain the utility or harmlessness of his opinion; though
forbidden to maintain its truth。 The truth of an opinion is part of
its utility。 If we would know whether or not it is desirable that a
proposition should be believed; is it possible to exclude the
consideration of whether or not it is true? In the opinion; not of bad
men; but of the best men; no belief which is contrary to truth can
be really useful: and can you prevent such men from urging that
plea; when they are charged with culpability for denying some d