Consumption is the sole end and purpose of all production; and the interest of the producer ought to be attended to, only so far as it may be necessary for promoting that of the consumer.

Later Marxian economics descending from classical economics also use Smith's labour theories in part. In addition he was in favor of retaliatory tariffs and believed that they would eventually bring down the price of goods. According to Boswell he once told Sir Joshua Reynolds that 'he made it a rule when in company never to talk of what he understood'.

Adam Smith (5 June 1723 OS – 17 July 1790) was a Scottish moral philosopher and a pioneer of political economy. In 2009 Smith was named among the "Greatest Scots" of all time in a vote run by Scottish television channel STV. He died in 1790 at the age of 67.