Nothing will ever be attempted if all possible objections must first be overcome.

Curiosity, like all other desires, produces pain as well as pleasure.

We are not here to sell a parcel of boilers and vats, but the potentiality of growing rich beyond the dreams of avarice.

When a man knows he is to be hanged in a fortnight, it concentrates his mind wonderfully.

All power of fancy over reason is a degree of madness.

Avarice is generally the last passion of those lives of which the first part has been squandered in pleasure, and the second devoted to ambition. He that sinks under the fatigue of getting wealth, lulls his age with the milder business of saving it

Novelty is indeed necessary to preserve eagerness and alacrity; but art and nature have stores inexhaustible by human intellects, and every moment produces something new to him who has quickened his faculties by diligent observation.