Principles of Political Economy: Abridged with Critical, Bibliographical, and Explanatory Notes, and a Sketch of the History of Political Economy
John Stuart Mill · en
“And here it may be well to state precisely what is to be
understood by a ‘fluctuation of the market,’ as distinguished from
those changes of normal price which we have been considering.
Normal price, as we have seen, is governed, according to the
circumstances of the case [as to whether there is free industrial
competition or not], by one or other of two causes—cost of
production and reciprocal demand. A change in normal price,
therefore, is a change which is the consequence of an alteration
in one or other of these conditions. So long as the determining
condition—be it cost of production or reciprocal demand—remains
constant, the normal price must be considered as remaining
constant; but, the normal price remaining constant, the market
price (which, as we have seen, depends on the opinion of dealers
respecting the state of supply and demand in relation to the
particular article) may undergo a change—may deviate, that is to
say, either upward or downward from the normal level. Such changes
of price, occurring while the permanent conditions of production
remain unaffected, can only be temporary, calling into action, as
they do, forces which at once tend to restore the normal state of
things: they may therefore be properly described as ‘fluctuations
of the market.’ ”(218)
§ 5. When profits vary from Employment to Employment, or are spread over
unequal lengths of Time, they affect Values accordingly.
Value, however, being purely relative, can not depend upon absolute
profits, no more than upon absolute wages, but upon relative profits only.
High general profits can not, any more than high general wages, be a cause
of high values, because high general values are an absurdity and a
contradiction. In so far as profits enter into the cost of production of
all things, they can not affect the value of any. It is only by entering
in a greater degree into the cost of production of some things than of
others, that they can have any influence on value.