The difference between the most dissimilar characters, between a philosopher and a common street porter, for example, seems to arise not so much from… - Adam Smith

A very poor man may be said in some sense to have a demand for a coach and six; he might like to have it; but his demand is not an effectual demand, as the commodity can never be brought to market in order to satisfy it.

In the long-run the workman may be as necessary to his master as his master is to him, but the necessity is not so immediate.

I. The subjects of every state ought to contribute towards the support of the government, as nearly as possible, in proportion to their respective abilities, that is, in proportion to the revenue which they respectively enjoy under the protection of the state.