The exchangeable value of all commodities rises as the difficulties of their production increase.

The price of corn will naturally rise with the difficulty of producing the last portions of it.

Neither machines, nor the commodities made by them, rise in real value, but all commodities made by machines fall, and fall in proportion to their durability.

I have endeavoured to show that the ability to pay taxes depends, not on the gross money value of the mass of commodities, nor on the net money value of the revenue of capitalists and landlords, but on the money value of each man's revenue compared to the money value of the commodities which he usually consumes.

Every transaction in commerce is an independent transaction.

Like all other contracts, wages should be left to the fair and free competition of themarket, and should never be controlled by the interference of the legislature.

Gold and silver, like other commodities, have an intrinsic value, which is not arbitrary, but is dependent on their scarcity, the quantity of labour bestowed in procuring them, and the value of the capital employed in the mines which produce them.