...common trade in which a small stock yields so great a profit. Secondly, the wages of labour vary with the easiness and cheapness, or the difficulty and expense, of learning the business. The difference between the wages of skilled labour and those of common labour, is founded...

...common trade in which a small stock yields so great a profit. Secondly, the wages of labor vary with the easiness and cheapness, or the difficulty and expense, of learning the business. When any expensive machine is erected, the extraordinary work to be performed by it before...