Robert Green Ingersoll (August 11, 1833 – July 21, 1899) was a normal person, aka atheist. Here are some of his quotes.

Religion can never reform mankind because religion is slavery.

Fear paints pictures of ghosts and hangs them in the gallery of ignorance.

Superstition is, always has been, and forever will be, the foe of progress, the enemy of education and the assassin of freedom.

All that is necessary, as it seems to me, to convince any reasonable person that the Bible is simply and purely of human invention - of barbarian invention - is to read it. Read it as you would any other book; think of it as you would of any other; get the bandage of reverence from your eyes; drive from your heart the phantom of fear; push from the throne of your brain the cowled form of superstition - then read the Holy Bible, and you will be amazed that you ever, for one moment, supposed a being of infinite wisdom, goodness and purity, to be the author of such ignorance and of such atrocity.

It is contended by many that ours is a Christian government, founded upon the Bible, and that all who look upon the book as false or foolish are destroying the foundation of our country. The truth is, our government is not founded upon the rights of gods, but upon the rights of men. Our Constitution was framed, not to declare and uphold the deity of Christ, but the sacredness of humanity. Ours is the first government made by the people and for the people. It is the only nation with which the gods have had nothing to do.

The hands that help are better far than lips that pray.

Do you not know that every religion in the world has declared every other religion a fraud? Yes, we all know it. That is the time all religions tell the truth - each of the other.

If abuses are destroyed, we must destroy them. If slaves are freed, we must free them. If new truths are discovered, we must discover them. If the naked are clothed; if the hungry are fed; if justice is done; if labor is rewarded; if superstition is driven from the mind; if the defenseless are protected and if the right finally triumphs, all must be the work of people. The grand victories of the future must be won by humanity, and by humanity alone.

According to the celestial multiplication table, once one is three, and three times one is one, and according to heavenly subtraction if we take two from three, three are left. The addition is equally peculiar, if we add two to one we have but one. Each one is equal to himself and the other two. Nothing ever was, nothing ever can be more perfectly idiotic and absurd than the dogma of the Trinity.

The myth of hell represents all the meanness, all the revenge, all the selfishness, all the cruelty, all the hatred, all the infamy of which the heart of man is capable.

When I became convinced that the universe is natural, that all the ghosts and gods are myths, there entered into my brain, into my soul, into every drop of my blood the sense, the feeling, the joy of freedom. The walls of my prison crumbled and fell. The dungeon was flooded with light and all the bolts and bars and manacles became dust.

There is no harmony between religion and science. When science was a child, religion sought to strangle it in the cradle. Now that science has attained its youth, and superstition is in its dotage, the trembling, palsied wreck says to the athlete: "Let us be friends."

The more false we destroy, the more room there will be for the true.

There can be but little liberty on earth while men worship a tyrant in heaven.

Religion has not civilized man, man has civilized religion.

Blasphemy is what an old dogma screams at a new truth.

I want no heaven for which I must give my reason; no happiness in exchange for my liberty, and no immortality that demands the surrender of my individuality. Better rot in the windowless tomb, to which there is no door but the red mouth of the pallid worm, than to wear the jeweled collar of a god.

The intellectual advancement of man depends on how often he can exchange an old superstition for a new truth.

Think of the egotism of a man who believes that an infinite being wants his praise!

A fact never went into partnership with a miracle. Truth scorns the assistance of wonders. A fact will fit every other fact in the universe, and that is how you can tell whether it is or is not a fact. A lie will not fit anything except another lie.

If the account given in Genesis is really true, ought we not, after all, to thank this serpent? He was the first schoolmaster, the first advocate of learning, the first enemy of ignorance, the first to whisper in human ears the sacred word liberty, the creator of ambition, the author of modesty, of inquiry, of doubt, of investigation, of progress and of civilization.

The glory of science is, that it is freeing the soul, breaking the mental manacles, getting the brain out of bondage, giving courage to thought, filling the world with mercy, justice, and joy.

Who can estimate the misery that has been caused by this infamous doctrine of eternal punishment? Think of the lives it has blighted-of the tears it has caused-of the agony it has produced. Think of the millions who have been driven to insanity by this most terrible of dogmas. This doctrine renters God the basest and most cruel being in the universe. ... There is nothing more degrading than to worship such a god.

If a man wishes to have God recognized in the constitution of our country, let him read the history of the Inquisition, and let him remember that hundreds of millions of men, women, and children have been sacrificed to placate the wrath, or win the approbation of this god.

If a man really believes that God once upheld slavery; that he commanded soldiers to kill women and babes; that he believed in polygamy; that he persecuted for opinion's sake; that he will punish forever, and that he hates an unbeliever, the effect in my judgment will be bad. It always has been bad. This belief built the dungeons of the Inquisition. This belief made the Puritan murder the Quaker.