Trade is a social act.

Truth emerges from the clash of adverse ideas.

The real advantage which truth has, consists in this, that when an opinion is true, it may be extinguished once, twice, or many times, but in the course of ages there will generally be found persons to rediscover it

Money is a machine for doing quickly and commodiously what would be done, though less quickly and commodiously, without it.

The moment one asks himself whether he is happy, he ceases to be so.

The worth of the state, in the long run, is the worth of the individuals composing it.

Men are men before they are lawyers, or physicians, or merchants, or manufacturers; and if you make them capable and sensible men, they will make themselves capable and sensible lawyers or physicians.