There Is No Way Of Keeping Profits

If I Discover A Manure Which Will Enable Me To Make A Piece Of Land Produce 20 Per Cent More Corn, I May Withdraw At Least A Portion Of My Capital From The Most Unproductive Part Of My Farm.

Labour, Like All Other Things Which Are Purchased And Sold... Has Its Natural And Its Market Price.

The Farmer And Manufacturer Can No More Live Without Profit Than The Labourer Without Wages.

The Factors Left Out Of The Ricardian Equation Are Falling Wages And Idle Capacity.

If A Commodity Were In No Way Useful, - In Other Words, If It Could In No Way Contribute To Our Gratification, - It Would Be Destitute Of Exchangeable Value, However Scarce It Might Be, Or Whatever Quantity Of Labour Might Be Necessary To Procure It.