book I

, chap. i.

The division of labour adds to its energy,

1. By the skill which the workman in this way acquires;

2. By the saving of time--ibid.

The invention of machines is itself an effect of the division of labour--ibid.

The natural disposition of mankind to exchange with each other the different productions of their respective labours and talents, is the principle which has given birth to the division of labour-- book I , chap. ii.

The division of labour must of course be limited by the extent of the market; therefore, whatever tends to widen the market, facilitates the progress of a nation towards opulence-- book I , chap. iii.

Labour gains in _extent_,

1. In proportion to the accumulation of capital;

2. In proportion to the manner in which these are employed-- book I , introduction.

The accumulation of capitals is hastened by the increase of the proportion existing between the productive and unproductive consumers--