Great nations are never impoverished by private, though they sometimes are by public prodigality and misconduct.

Man is an animal that makes bargains: no other animal does this - no dog exchanges bones with another.

In raising the price of commodities, the rise of wages operates in the same manner as simple interest does in the accumulation of debt. Our merchants and master manufacturers complain much of the bad effects of high wages in raising the price, and thereby lessening the sale of their goods, both at home and abroad. They say nothing concerning the bad effects of high profits; they are silent with regard to the pernicious effects of their own gains. They complain only of those of other people.

The directors of such companies, however, being the managers rather of other people's money than of their own, it cannot well be expected, that they should watch over it with the same anxious vigilance with which the partners in a private copartnery frequently watch over their own.... Negligence and profusion, therefore, must always prevail, more or less, in the management of the affairs of such a company.

Wonder... and not any expectation of advantage from its discoveries, is the first principle which prompts mankind to the study of Philosophy, of that science which pretends to lay open the concealed connections that unite the various appearances of nature.

The great secret of education is to direct vanity to proper objects.

Defense is superior to opulence.