It is necessary to the happiness of man that he be mentally faithful to himself. Infidelity does not consist in believing, or in disbelieving, it consists in professing to believe what he does not believe.

War involves in its progress such a train of unforeseen circumstances that no human wisdom can calculate the end; it has but one thing certain, and that is to increase taxes.

It is not a God, just and good, but a devil, under the name of God, that the Bible describes.

Any system of religion that has anything in it that shocks the mind of a child, cannot be true.

The whole religious complexion of the modern world is due to the absence from Jerusalem of a lunatic asylum.

The greatest remedy for anger is delay.

Moderation in temper is always a virtue; but moderation in principle is always a vice.

Reputation is what men and women think of us; character is what God and angels know of us.

When we are planning for posterity, we ought to remember that virtue is not hereditary.

My country is the world, and my religion is to do good.

An army of principles can penetrate where an army of soldiers cannot.

Belief in a cruel God makes a cruel man.

Reason obeys itself; and ignorance submits to whatever is dictated to it.

A long habit of not thinking a thing wrong gives it a superficial appearance of being right.

Virtues are acquired through endeavor, Which rests wholly upon yourself. So, to praise others for their virtues Can but encourage one’s own efforts.

Is it not a species of blasphemy to call the New Testament revealed religion, when we see in it such contradictions and absurdities.

It is not a field of a few acres of ground, but a cause, that we are defending, and whether we defeat the enemy in one battle, or by degrees, the consequences will be the same.

All national institutions of churches, whether Jewish, Christian or Turkish, appear to me no other than human inventions, set up to terrify and enslave mankind, and monopolize power and profit.

‘Tis the business of little minds to shrink; but he whose heart is firm, and whose conscience approves his conduct, will pursue his principles unto death.

Persecution is not an original feature in any religion; but it is always the strongly marked feature of all religions established by law.

That which we obtain too easily, we esteem too lightly.

These are the times that try men’s souls.

Human nature is not of itself vicious.

Character is much easier kept than recovered.

Government, even in its best state, is but a necessary evil; in its worst state, an intolerable one.

It is error only, and not truth, that shrinks from inquiry.

One good schoolmaster is of more use than a hundred priests.

The World is my country, all mankind are my brethren, and to do good is my religion.

Of all the tyrannies that affect mankind, tyranny in religion is the worst.

It is necessary to the happiness of man that he be mentally faithful to himself. Infidelity does not consist in believing, or in disbelieving, it consists in professing to believe what he does not believe.

He that would make his own liberty secure, must guard even his enemy from oppression; for if he violates this duty, he establishes a precedent that will reach to himself.

The real man smiles in trouble, gathers strength from distress, and grows brave by reflection.

The strength and power of despotism consists wholly in the fear of resistance.

If there must be trouble, let it be in my day, that my child may have peace.

Arms discourage and keep the invader and plunderer in awe, and preserve order in the world as well as property… Horrid mischief would ensue were the law-abiding deprived of the use of them.

Lead, follow, or get out of the way.

The harder the conflict, the more glorious the triumph.

Those who expect to reap the blessings of freedom must, like men, undergo the fatigue of supporting it.

The most formidable weapon against errors of every kind is reason.

It is the direction and not the magnitude which is to be taken into consideration.

I believe in the equality of man; and I believe that religious duties consist in doing justice, loving mercy, and endeavoring to make our fellow-creatures happy.

The instant formal government is abolished, society begins to act. A general association takes place, and common interest produces common security.

My mind is my own church.

Titles are but nicknames, and every nickname is a title.

What we obtain too cheap, we esteem too lightly; it is dearness only that gives everything its value.

Time makes more converts than reason.

There are matters in the Bible, said to be done by the express commandment of God, that are shocking to humanity and to every idea we have of moral justice.

The Vatican is a dagger in the heart of Italy.

When men yield up the privilege of thinking, the last shadow of liberty quits the horizon.

The abilities of man must fall short on one side or the other, like too scanty a blanket when you are abed. If you pull it upon your shoulders, your feet are left bare; if you thrust it down to your feet, your shoulders are uncovered.

To establish any mode to abolish war, however advantageous it might be to Nations, would be to take from such Government the most lucrative of its branches.

We can only reason from what is; we can reason on actualities, but not on possibilities.

To say that any people are not fit for freedom, is to make poverty their choice, and to say they had rather be loaded with taxes than not.

If we do not hang together, we shall surely hang separately.

It is an affront to treat falsehood with complaisance.

But such is the irresistable nature of truth, that all it asks, and all it wants is the liberty of appearing.

A thing moderately good is not so good as it ought to be. Moderation in temper is always a virtue; but moderation in principle is always a vice.

There are two distinct classes of what are called thoughts: those that we produce in ourselves by reflection and the act of thinking and those that bolt into the mind of their own accord.

He that rebels against reason is a real rebel, but he that in defence of reason rebels against tyranny has a better title to Defender of the Faith, than George the Third.

That God cannot lie, is no advantage to your argument, because it is no proof that priests can not, or that the Bible does not.

He who is the author of a war lets loose the whole contagion of hell and opens a vein that bleeds a nation to death.

Suspicion is the companion of mean souls, and the bane of all good society.

Society in every state is a blessing, but government, even in its best stage, is but a necessary evil; in its worst state an intolerable one.

Every science has for its basis a system of principles as fixed and unalterable as those by which the universe is regulated and governed. Man cannot make principles; he can only discover them.

We have it in our power to begin the world over again.

I love the man that can smile in trouble, that can gather strength from distress, and grow brave by reflection. ‘Tis the business of little minds to shrink, but he whose heart is firm, and whose conscience approves his conduct, will pursue his principles unto death.

Every religion is good that teaches man to be good; and I know of none that instructs him to be bad.