"There are four classes of Idols
which beset men's minds. To these for distinction's sake I have assigned
names — calling the first class, Idols of the Tribe ; the second, Idols
of the Cave; the third, Idols of the Market-Place; the fourth, Idols
of the Theater."
"The Idols of Tribe have their
foundation in human nature itself, and in the tribe or race of men.
For it is a false assertion that the sense of man is the measure of
things. On the contrary, all perceptions as well of the sense as of
the mind are according to the measure of the individual and not according
to the measure of the universe. And the human understanding is like
a false mirror, which, receiving rays irregularly, distorts and discolors
the nature of things by mingling its own nature with it."
"The Idols of the Cave are the
idols of the individual man. For everyone (besides the errors common
to human nature in general) has a cave or den of his own, which refracts
and discolors the light of nature, owing either to his own proper and
peculiar nature; or to his education and conversation with others; or
to the reading of books, and the authority of those whom he esteems
and admires; or to the differences of impressions, accordingly as they
take place in a mind preoccupied and predisposed or in a mind indifferent
and settled; or the like. So that the spirit of man (according as it
is meted out to different individuals) is in fact a thing variable and
full of perturbation, and governed as it were by chance. Whence it was
well observed by Heraclitus that men look for sciences in their own
lesser worlds, and not in the greater or common world."
"There are also Idols formed by
the intercourse and association of men with each other, which I call
Idols of the Market Place, on account of the commerce and consort of
men there. For it is by discourse that men associate, and words are
imposed according to the apprehension of the vulgar. And therefore the
ill and unfit choice of words wonderfully obstructs the understanding.
Nor do the definitions or explanations wherewith in some things learned
men are wont to guard and defend themselves, by any means set the matter
right. But words plainly force and overrule the understanding, and throw
all into confusion, and lead men away into numberless empty controversies
and idle fancies."
Lastly, there are Idols which have immigrated
into men's minds from the various dogmas of philosophies, and also from
wrong laws of demonstration. These I call Idols of the Theater, because
in my judgment all the received systems are but so many stage plays,
representing worlds of their own creation after an unreal and scenic
fashion.