The world is a country which nobody ever yet knew by description; one must travel through it one's self to be acquainted with it.

Six, or at most seven, hours' sleep is, for a constancy, as much as you or anybody else can want; more is only laziness and dozing, and is, I am persuaded, both unwholesome and stupefying.

The scholar without good breeding is a pedant; the philosopher, a cynic.

Everything is worth seeing once, and the more one sees the less one either wonders or admires.

The less one has to do, the less time one finds to do it in.

Manners must adorn knowledge and smooth its way through the world.

Gold and silver are but merchandise, as well as cloth or linen; and that nation that buys the least, and sells the most, must always have the most money.