(ii) Reasons of excellence and ideals of human perfection, specified by
reference to our, or to society’s, ideals of excellence and perfection. (Utili-
tarianism, II: ¶6; On Liberty, IV: ¶¶5, 7. All of IV: ¶¶3–12 is important.)
(iii) Reasons of dislike or disgust, or of preference, where the disliking,
disgust, or preference cannot be supported by reasons of right and wrong,
as defined in Utilitarianism, V: ¶¶14–15.
Thus, one way to read Mill’s Principle of Liberty as a principle of public
reason is to see it as excluding certain kinds of reasons from being taken
into account in legislation, or in guiding the moral coercion of public opin-
ion (as a social sanction). In the case of public reason, the three kinds of
reasons given above count for zero.
I call your attention here to a question of interpretation. I have read the
first clause of the Principle of Liberty as saying that society should never in-
terfere with an individual’s belief and conduct unless that person’s beliefs
and conduct injure the legitimate interests, or the moral rights, of others.
This doesn’t always fit with Mill’s own way of stating the principle. He says
in I: ¶9: “. . . the sole end for which mankind are warranted...ininterfer-
ing with the liberty of action of any of their number is self-protection.” Or:
“...topreventharmtoothers.” Or: “the conduct...mustbecalculated to
produce evil to some one else.” Or: “the only part of the conduct of any-
one for which he is amenable to society, is that which concerns others.”
And in I: ¶11 he speaks of conduct “hurtful to others,” and in IV: ¶3, of
conduct that “affects prejudicially the interests of others.”
Obviously much that others do concerns us, but that is not to say that
what they do produces evil to us. As Mill says in IV: ¶3, “The acts of an indi-
vidual may be hurtful to others . . . without going the length of violating
any of their constituted rights.” “Concern” and “affect” are general terms
covering much. We must decide, then, how to resolve this implicit ambigu-
ity and vagueness of Mill’s language and to do so in a way that makes sense
of his text. To this end I read the leading text as given by III: ¶9 and sup-
ported by IV: ¶3. So we say the following, drawing on IV: ¶3:
First Clause: Society should never interfere with the individual’s beliefs
and conduct by law or punishment, or by moral opinion as coercive, unless
the individual’s beliefs and conduct injure—that is, wrong or violate—the
legitimate interests of others, either in express legal provisions (assumed to
be justified), or by tacit understanding ought to be considered as (moral)
rights.
This still needs some commentary and interpretation, but we are now
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The Principle of Liberty
Copyright © The President and Fellows of Harvard College
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