“Insults are engendered from vulgar minds, like toadstools from a dunghill.”

Commerce flourishes by circumstances, precarious, transitory, contingent, almost as the winds and waves that bring it to our shores.

The true measure of your character is what you do when nobody’s watching.

To cure us of our immoderate love of gain, we should seriously consider how many goods there are that money will not purchase, and these the best; and how many evils there are that money will not remedy, and these the worst.

It is not so difficult a task to plant new truths, as to root out old errors; for there is this paradox in men, they run after that which is new, but are prejudiced in favor of that which is old.

Hope is a prodigal young heir, and experience is his banker.

A fool is often as dangerous to deal with as a knave, and always more incorrigible.

He that studies books alone, will know how things ought to be; and he that studies men, will know how things are.

Man is an embodied paradox, a bundle of contradictions.

It is better to meet danger than to wait for it. He that is on a lee shore, and foresees a hurricane, stands out to sea and encounters a storm to avoid a shipwreck.

Doubt is the vestibule of faith.

The awkwardness and embarrassment which all feel on beginning to write, when they themselves are the theme, ought to serve as a hint to author’s that self is a subject they ought very rarely to descant upon.

That writer does the most who gives his reader the most knowledge and takes from him the least time.

Theories are private property, but truth is common stock.

Sturdy beggars can bear stout denials.

None are so fond of secrets as those who do not mean to keep them.

Let those who would affect singularity with success first determine to be very virtuous, and they will be sure to be very singular.

Monotheism occupies so large a space in the view of modern minds, that it is scarcely possible to form a just estimate of the preceding phases of the theological philosophy.

A study of the history of opinion is a necessary preliminary to the emancipation of the mind.

Ideas that enter the mind under fire remain there securely and for ever.

When I find new information I change my mind; What do you do?

Very few minds are strictly normal, and all religious fanatics are marked with abnormalities of various sorts.

Our excessive tolerance with regard to suicide is due to the fact that, since the state of mind from which it springs is a general one, we cannot condemn it without condemning ourselves; we are too saturated with it not partly to excuse it.

The universe displays no proof of an all-directing mind.

It economics is a method rather than a doctrine, an apparatus of the mind, a technique of thinking which helps its possessor to draw correct conclusions.