The machines that are first invented to perform any particular movement are always the most complex, and succeeding artists generally discover that, with fewer wheels, with fewer principles of motion, than had originally been employed, the same effects may be more easily produced. The first systems, in the same manner, are always the most complex.

The division of labour was limited by the extent of the market

The tolls for the maintenance of a high road, cannot with any safety be made the property of private persons.

It is the highest impertinence and presumption, therefore, in kings and ministers to pretend to watch over the economy of private people, and to restrain their expense. They are themselves, always, and without any exception, the greatest spendthrifts in the society.

That wealth and greatness are often regarded with the respect and admiration which are due only to wisdom and virtue; and that the contempt, of which vice and folly are the only proper objects, is most often unjustly bestowed upon poverty and weakness, has been the complaint of moralists in all ages.

The importation of gold and silver is not the principal, much less the sole benefit which a nation derives from its foreign trade.

Every tax, however, is to the person who pays it a badge, not of slavery but of liberty. It denotes that he is a subject to government, indeed, but that, as he has some property, he cannot himself be the property of a master.