By physical liberty I mean the right to do anything which does not interfere with the happiness of another. By intellectual liberty I mean the right to think and the right to think wrong.
Mental slavery is mental death, and every man who has given up his intellectual freedom is the living coffin of his dead soul.
What light is to the eyes – what air is to the lungs – what love is to the heart, liberty is to the soul of man. Without liberty, the brain is a dungeon, where the chained thoughts die with their pinions pressed against the hingeless doors.
The real searcher after truth will not receive the old because it is old, or reject the new because it is new. He will not believe men because they are dead, or contradict them because they are alive. With him an utterance is worth the truth, the reason it contains, without the slightest regard to the author. He may have been a king or serf -- a philosopher or servant, -- but the utterance neither gains nor loses in truth or reason. Its value is absolutely independent of the fame or station of the man who gave it to the world.
Intellectual liberty is the air of the soul, the sunshine of the mind, and without it, the world is a prison, the universe is a dungeon.
There are in nature neither rewards nor punishments - there are only consequences.
Courage without conscience is a wild beast.
If there is a God who will damn his children forever, I would rather go to hell than to go to heaven and keep the society of such an infamous tyrant. I make my choice now. I despise that doctrine. It has covered the cheeks of this world with tears. It has polluted the hearts of children, and poisoned the imaginations of men. It has been a constant pain, a perpetual terror to every good man and woman and child. It has filled the good with horror and with fear; but it has had no effect upon the infamous and base. It has wrung the hearts of the tender, it has furrowed the cheeks of the good. This doctrine never should be preached again. What right have you, sir, Mr. clergyman, you, minister of the gospel to stand at the portals of the tomb, at the vestibule of eternity, and fill the future with horror and with fear? I do not believe this doctrine, neither do you. If you did, you could not sleep one moment. Any man who believes it, and has within his breast a decent, throbbing heart, will go insane. A man who believes that doctrine and does not go insane has the heart of a snake and the conscience of a hyena.
Give to every human being every right that you claim for yourself.
The man who does not do his own thinking is a slave, and is a traitor to himself and his fellow men.
There is no slavery but ignorance.
Liberty is the child of intelligence.
Love is the only bow on Life's dark cloud. It is the morning and the evening star. It shines upon the babe, and sheds its radiance on the quiet tomb. It is the mother of art, inspirer of poet, patriot and philosopher. It is the air and light of every heart -- builder of every home, kindler of every fire on every hearth. It was the first to dream of immortality. It fills the world with melody -- for music is the voice of love. Love is the magician, the enchanter, that changes worthless things to Joy, and makes royal kings and queens of common clay. It is the perfume of that wondrous flower, the heart, and without that sacred passion, that divine swoon, we are less than beasts; but with it, earth is heaven, and we are gods.
Heresy is what the minority believe; it is the name given by the powerful to the doctrines of the weak.
There will never be a generation of great men until there has been a generation of free women -- of free mothers.
Every crime is born of necessity. If you want less crime, you must change the conditions. Poverty makes crime. Want, rags, crusts, misfortune - all these awake the wild beast in man, and finally he takes, and takes contrary to law, and becomes a criminal. And what do you do with him? You punish him. Why not punish a man for having consumption? The time will come when you will see that that is just as logical. What do you do with the criminal? You send him to the penitentiary. Is he made better? Worse. The first thing you do is to try to trample out his manhood, by putting an indignity upon him. You mark him. You put him in stripes. At night you put him in darkness. His feeling for revenge grows. You make a wild beast of him, and he comes out of that place branded in body and soul, and then you won't let him reform if he wants to.
I am the inferior of any man whose rights I trample under foot.
They say the religion of your fathers is good enough. Why should a father object to your inventing a better plow than he had? They say to me, do you know more than all the theologians dead? Being a perfectly modest man I say I think I do. Now we have come to the conclusion that every man has a right to think. Would God give a bird wings and make it a crime to fly? Would he give me brains and make it a crime to think? Any God that would damn one of his children for the expression of his honest thought wouldn't make a decent thief. When I read a book and don't believe it, I ought to say so. I will do so and take the consequences like a man.
— My creed —\\
Happiness is the only good.\\
The place to be happy is here.\\
The time to be happy is now.\\
The way to be happy is to make others so.
It is incredible that only idiots are absolutely sure of salvation. It is incredible that the more brain you have the less your chance is. There can be no danger in honest thought, and if the world ever advances beyond what it is to-day, it must be led by men who express their real opinions.
All the martyrs in the history of the world are not sufficient to establish the correctness of an opinion. Martyrdom, as a rule, establishes the sincerity of the martyr, — never the correctness of his thought. Things are true or false in themselves. Truth cannot be affected by opinions; it cannot be changed, established, or affected by martyrdom. An error cannot be believed sincerely enough to make it a truth.