Satire is a composition of salt and mercury; and it depends upon the different mixture and preparation of those ingredients, that it comes out a noble medicine, or a rank poison.

Damn the Solar System. Bad light; planets too distant; pestered with comets; feeble contrivance; could make a better myself.

The disease and its medicine are like two factions in a besieged town; they tear one another to pieces, but both unite against their common enemy, Nature.

Nothing is so firmly than that which is least known.

There is nothing respecting which a man may be so long unconscious as of the extent and strength of his prejudices.

Simplicity of manner is the last attainment. Men are very long afraid of being natural, from the dread of being taken for ordinary.

An obligation is something which constrains or induces us to act.