h belong to you, and which you
might have used for yourself?" And what good reason have you to maintain
that Paul is bound to render this especial service gratuitously; that he
has no right to demand anything more in consequence of this requisition;
that the State ought to interfere to force him to submit? Is it not
incomprehensible that the economist, who preaches such a doctrine to the
people, can reconcile it with his principle of _the reciprocity of
services_? Here I have introduced cash; I have been led to do so by a
desire to place, side by side, two objects of exchange, of a perfect and
indisputable equality of value. I was anxious to be prepared for
objections; but, on the other hand, my demonstration would have been
more striking still, if I had illustrated my principle by an agreement
for exchanging the services or the productions themselves.

Suppose, for example, a house and a vessel of a value so perfectly equal
that their proprietors are disposed to exchange them even-handed,
without excess or abatement. In fact let the bargain be settled by a
lawyer. At the moment of each taking possession, the shipowner says to
the citizen, "Very well; the transaction is completed, and nothing can
prove its perfect equity better than our free and voluntary consent. Our
conditions thus fixed, I shall propose to you a little practical
modification. You shall let me have your house to-day, but I shall not
put you in possession of my ship for a year; and the reason I make this
demand of you is, that, during this year of _delay_, I wish to use the
vessel." That we may not be embarrassed by considerations relative to
the deterioration of the thing lent, I will suppose the shipowner to
add, "I will engage, at the end of the year, to hand over to you the
vessel in the state in which it is to-day." I ask of every candid man, I
ask of M. Proudhon himself, if the citizen has not a right to answer,
"The new clause which you propose entirely alters the proportion or the
equal value of the exchanged services. By it, I shall be deprived, for
the space of a year, both at once of my house and of your vessel. By it,
you will make use of both. If, in the absence of this clause, the
bargain was just, for the same reason the clause is injurious to me. It
stipulates for a loss to me, and a gain to you. You are requiring of me
a new service; I have a right to refuse, or to require of you, as a
compensation, an equivalent service." If the partie