People of the same trade seldom meet together, even for merriment and diversion, but the conversation ends in a conspiracy against the public, or in some contrivance to raise prices.

The annual produce of the land and labour of any nation can be increased in its value by no other means, but by increasing either the number of its productive labourers, or the productive powers of those labourers who had before been employed.

By nature a philosopher is not in genius and disposition half so different from a street porter, as a mastiff is from a greyhound

I have no faith in political arithmetic.

The proprietor of stock is necessarily a citizen of the world, and is not necessarily attached to any particular country.

Men, like animals, naturally multiply in proportion to the means of their subsistence.

The learned ignore the evidence of their senses to preserve the coherence of the ideas of their imagination.