"The difference between the most dissimilar characters, between a philosopher and a common street porter, for example, seems to arise not so much from nature, as from habit, custom, and education."

"The liberal reward of labour, therefore, as it is the necessary effect, so it is the natural symptom of increasing national wealth."

"The greatest and most important branch of the commerce of every nation, is that which is carried on between the inhabitants of the town and those of the country."

"The poor, in order to obtain the means of subsistence, are obliged to undergo the drudgery and hardships of the meanest employments, and to expose themselves to the greatest dangers, in order to gain …"

"The desire of building, and the love of distinction, are the passions which give the greatest encouragement to the fine arts."