"Horace Mann" was an American politician and educational reformer. A Whig Party (United States)/Whig devoted to promoting speedy modernization, he served in the Massachusetts State Legislature (1827–37). In 1848, after serving as Secretary of the Massachusetts State Board of Education since its creation, he was elected to the United States House of Representatives. Historian Ellwood P. Cubberley asserts:

: No one did more than he to establish in the minds of the American people the conception that education should be universal, non-sectarian, free, and that its aims should be social efficiency, civic virtue, and character, rather than mere learning or the advancement of sectarian ends.

Arguing that universal public education was the best way to turn the nation's unruly children into disciplined, judicious Republicanism in the United States/republican citizens, Mann won widespread approval from modernizers, especially in his Whig Party (United States)/Whig Party, for building public schools. Most states adopted one version or another of the system he established in Massachusetts, especially the program for "normal schools" to train professional teachers. Mann has been credited by educational historians as the "Father of the Common School Movement".

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Be ashamed to die until you have won some victory for humanity.

He will always be a slave who does not know how to live upon a little.

Life grants nothing to us mortals without hard work.

Remember when life's path is steep to keep your mind even.

Make money, money by fair means if you can, if not, but any means money.

Mediocrity is not allowed to poets, either by the gods or man.

There is measure in all things.

To flee vice is the beginning of virtue, and to have got rid of folly is the beginning of wisdom.

Many brave men lived before Agamemnon; but all are overwhelmed in eternal night, unwept, unknown, because they lack a sacred poet.

Resolve to edge in a little reading every day, if it is but a single sentence. If you gain fifteen minutes a day, it will make itself felt at the end of the year.

Let us not be content to wait and see what will happen, but give us the determination to make the right things happen.

A word, once sent abroad, flies irrevocably.

Pale Death with impartial tread beats at the poor man's cottage door and at the palaces of kings.

Mix a little foolishness with your serious plans; it's lovely to be silly at the right moment.

Do not think of knocking out another person's brains because he differs in opinion from you. It would be as rational to knock yourself on the head because you differ from yourself ten years ago.

One wanders to the left, another to the right. Both are equally in error, but, are seduced by different delusions.

Adversity has the effect of eliciting talents, which in prosperous circumstances would have lain dormant.

In adversity remember to keep an even mind.

A house without books is like a room without windows. No man has a right to bring up his children without surrounding them with books, if he has the means to buy them.

Education...beyond all other devices of human origin, is a great equalizer of conditions of men --the balance wheel of the social machinery...It does better than to disarm the poor of their hostility toward the rich; it prevents being poor.

Faults are soon copied.

Force without wisdom falls of its own weight.

I will not add another word.

If you wish me to weep, you must mourn first yourself.

Whatever advice you give, be brief.

Think to yourself that every day is your last; the hour to which you do not look forward will come as a welcome surprise.

Choose a subject equal to your abilities; think carefully what your shoulders may refuse, and what they are capable of bearing.

Seize the day, put no trust in the morrow![Carpe diem, quam minimum credula postero.]

Life is largely a matter of expectation.

He who postpones the hour of living rightly is like the rustic who waits for the river to run out before he crosses.

We rarely find anyone who can say he has lived a happy life, and who, content with his life, can retire from the world like a satisfied guest.

Education alone can conduct us to that enjoyment which is, at once, best in quality and infinite in quantity.

A picture is a poem without words.

No man ever reached to excellence in any one art or profession without having passed through the slow and painful process of study and preparation.

The appearance of right oft leads us wrong.

It is when I struggle to be brief that I become obscure.

With you I should love to live, with you be ready to die.

With silence favor me. (Favete Linguis).

To pity distress is but human; to relieve it is Godlike.

If any man seeks for greatness, let him forget greatness and ask for truth, and he will find both.

Wisdom is not wisdom when it is derived from books alone.

There is a measure in everything. There are fixed limits beyond which and short of which right cannot find a resting place.

If an idiot were to tell you the same story every day for a year, you would end by believing it.

He who has begun has half done. Dare to be wise; begin!

Lost, yesterday, somewhere between sunrise and sunset, two golden hours, each set with sixty diamond minutes. No reward is offered for they are gone forever.

Once a word has been allowed to escape, it cannot be recalled.

Cease to ask what the morrow will bring forth. And set down as gain each day that Fortune grants.

Jails and prisons are the complement of schools; so many less as you have of the latter, so many more must you have of the former.

The covetous man is ever in want.

Nothing's beautiful from every point of view.

Whoever cultivates the golden mean avoids both the poverty of a hovel and the envy of a palace.

The years as they pass plunder us of one thing after another.

Of writing well the source and fountainhead is wise thinking.

Habit is a cable; we weave a thread of it every day, and at last we cannot break it.

It is not the rich man you should properly call happy, but him who knows how to use with wisdom the blessings of the gods, to endure hard poverty, and who fears dishonor worse than death, and is not afraid to die for cherished friends or fatherland.

Mix a little foolishness with your prudence: It's good to be silly at the right moment.

Rule your mind or it will rule you.

Character is what God and the angels know of us; reputation is what men and women think of us.

A house without books is like room without windows.

He wins every hand who mingles profit with pleasure.