British philosopher and political economist (1806–1873)
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That the principle which regulates the existing social relations between the two sexes — the legal subordination of one sex to the other — is wrong in itself, and now one of the chief hindrances to human improvement; and that it ought to be replaced by a principle of perfect equality, admitting no power or privilege on the one side, nor disability on the other.
If there are any persons who contest a received opinion,
or who will do so if law or opinion will let them, let us thank
them for it, open our minds to listen to them, and rejoice
that there is some one to do for us what we otherwise ought,
if we have any regard for either the certainty or the vitality of
our convictions, to do with much greater labor for ourselves.
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.
An intermediate case is that of a name used analogically or metaphorically; that is, a name which is predicated of two things, not univocally, or exactly in the same signification, but in significations somewhat similar, and which being derived one from the other, one of them may be considered the primary, and the other a secondary signification.
He who knows only his own side of the case, knows little of that. His reasons may be good, and no one may have been able to refute them. But if he is equally unable to refute the reasons on the opposite side; if he does not so much as know what they are, he has no ground for preferring either opinion.
To think that because those who wield power in society wield in the end that of government, therefore it is of no use to attempt to influence the constitution of the government by acting on opinion, is to forget that opinion is itself one of the greatest active social forces. One person with a belief is a social power equal to ninety-nine who have only interests.
"Conservatives are not necessarily stupid, but most stupid people are conservatives...
I never meant to say that the Conservatives are generally stupid. I meant to say that stupid people are generally Conservative. I believe that is so obviously and universally admitted a principle that I hardly think any gentleman will deny it. Suppose any party, in addition to whatever share it may possess of the ability of the community, has nearly the whole of its stupidity, that party must, by the law of its constitution, be the stupidest party; and I do not see why honorable gentlemen should see that position as at all offensive to them, for it ensures their being always an extremely powerful party . . . There is so much dense, solid force in sheer stupidity, that any body of able men with that force pressing behind them may ensure victory in many a struggle, and many a victory the Conservative party has gained through that power."
John Stuart Mill ( British philosopher, economist, and liberal member of Parliament for Westminster from 1865 to 68 )
No one can be a great thinker who does not recognize, that as a thinker his first duty is to follow his intellect wherever it may lead. Truth gains more even by the errors of one who, with due study and preparation, thinks for himself, than by the true opinions if those who only hold them because they do not suffer themselves to think.