Liberty! for the first time in this discussion I appeal to her.

Let her rise in her own defence, and achieve her victory.
Every transaction ending in an exchange of products or services may be designated as a COMMERCIAL OPERATION.
Whoever says commerce, says exchange of equal values; for, if the values are not equal, and the injured party perceives it, he will not consent to the exchange, and there will be no commerce.
Commerce exists only among free men.

Transactions may be effected between other people by violence or fraud, but there is no commerce.
A free man is one who enjoys the use of his reason and his faculties; who is neither blinded by passion, nor hindered or driven by oppression, nor deceived by erroneous opinions.
So, in every exchange, there is a moral obligation that neither of the contracting parties shall gain at the expense of the other; that is, that, to be legitimate and true, commerce must be exempt from all inequality.

This is the first condition of commerce.

Its second condition is, that it be voluntary; that is, that the parties act freely and openly.
I define, then, commerce or exchange as an act of society.
The negro who sells his wife for a knife, his children for some bits of glass, and finally himself for a bottle of brandy, is not free.