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

If English money was of the same value then as before, Hamburgh money must have risen in value. But where is the proof of this?

Profits are not made by differential cleverness, but by differential stupidity.

As the revenue of the farmer is realized in raw produce, or in the value of raw produce, he is interested, as well as the landlord, in its high exchangeable value, but a low price of produce may be compensated to him by a great additional quantity.

There is no way of keeping profits up but by keeping wages down.

The factors left out of the Ricardian equation are falling wages and idle capacity.

Labour, like all other things which are purchased and sold... has its natural and its market price.