The gratification which affluence of wealth, extent of power, and eminence of reputation confer, must be always, by their own nature, confined to a very small number; and the life of the greater part of mankind must be lost in empty wishes and painful comparisons, were not the balm of philosophy shed upon us, and our discontent at the appearances of unequal distribution soothed and appeased.

A man who both spends and saves money is the happiest man, because he has both enjoyments.

Too much vigor in the beginning of an undertaking often intercepts and prevents the steadiness and perseverance always necessary in the conduct of a complicated scheme.

Ignorance cannot always be inferred from inaccuracy; knowledge is not always present.

Plenty is the original cause of many of our needs; and even the poverty, which is so frequent and distressful in civilized nations, proceeds often from that change of manners which opulence has produced. Nature makes us poor only when we want necessaries; but custom gives the name of poverty to the want of superfluities.

Many causes may vitiate a writer's judgement of his own works. On that which has cost him much labour he sets a high value, because he is unwilling to think that he has been diligent in vain: what has been produced without toilsome efforts is considered with delight as a proof of vigorous faculties and fertile invention; and the last work, whatever it be, has necessarily most of the grace of novelty.

The roads of science are narrow, so that they who travel them, must wither follow or meet one another.