Six mistakes mankind keeps making century after century: Believing that personal gain is made by crushing others; Worrying about things that cannot be changed or corrected; Insisting that a thing is impossible because we cannot accomplish it; Refusing to set aside trivial preferences; Neglecting development and refinement of the mind; Attempting to compel others to believe and live as we do.

Memory is the treasury and guardian of all things.

Nothing contributes to the entertainment of the reader more, than the change of times and the vicissitudes of fortune.

If you would abolish covetousness, you must abolish its mother, profusion.

Nothing is more unreliable than the populace, nothing more obscure than human intentions, nothing more deceptive than the whole electoral system.

If I had more time, I would have written a shorter letter.

The mansion should not be graced by its master, the master should grace the mansion.